These tools will create a digital connection to the frontline, driving a higher level of engagement and delivering real-time updates to our clients that provide more transparency on services performed. Over the next couple of years, we plan to scale this ecosystem to deliver the outcomes we initially shared during Investor Day in late 2021. We’ve also had a lot of learnings from the successful initial deployment of our cloud-based ERP system in our Education Industry Group earlier this year. We are applying those learnings to future segment ERP rollouts to ensure we minimize any potential disruptions to our clients and our internal operations. As a result, we expect the full deployment may take about a year longer than first anticipated and the total program cost will likely be about $200 million to $250 million, which is modestly higher than we said in 2021.
We could not be more excited about the positive impact that our transformation initiatives are having on our clients and team members. Our expectation is that these capabilities will be game-changing in our industry. Looking back at our performance in 2023. We did a terrific job winning large new contracts in Aviation, in Education, as well as in M&D, where we continue to expand. Although we experienced some project delays in Technical Solutions, our performance improved in the fourth quarter and we expect further progress as the nascent markets mature. In B&I, we are effectively navigating this challenging market, benefiting from the flexibility in our labor model and our real estate portfolio that remains heavily weighted towards better-performing Class A properties.
In 2024, we expect generally healthy market activities to Technical Solutions, Aviation, Education, and M&D. At the same time, we anticipate that the conditions will remain challenging in the commercial real estate office market and that we will be impacted by some business rebalancing and M&D. We expect these factors, along with projected labor inflation will likely mute our revenue growth and cause our margins to incrementally tick lower when compared to the strong levels we achieved in 2023. Our overall outlook for 2024 therefore, is essentially unchanged from the comments we shared last quarter. Earl will walk you through the specifics of our 2024 outlook in his comments. As we look forward, we expect our teams to set another new sales record in 2024 after record sales in 2023.
Through our ELEVATE initiatives, we are leveraging our scale, depth of service offerings and technology. In addition, we will continue to carefully manage costs and proactively make changes to our cost base if necessary, just as we did in 2023. And, of course, our anticipated strong free cash flow will enable us to continue to invest for the long-term, while regularly returning cash to our shareholders. Now, I’ll turn it over to Earl.
Earl Ellis: Thank you, Scott, and good morning everyone. For those of you following along with our earnings presentation, please turn to Slide 5. Fourth quarter revenue of $2.1 billion increased 4.1%, comprised of organic revenue growth of 3.8% and a one-month contribution from RavenVolt. Moving on to Slide 6, net income in the fourth quarter was $62.8 million or $0.96 per diluted share, up 29% and 32% respectively versus last year. These increases were largely driven by higher segment earnings on higher revenue, the benefits of the prior year self-insurance adjustments, and lower ELEVATE costs, partially offset by higher interest expense and labor costs. Adjusted net income of $66.2 million increased 11% and adjusted earnings per diluted share of $1.01 was up 13% over the prior year period.
These year-over-year increases primarily reflect higher segment earnings, including the benefits from price increases and our cost management efforts, partially offset by higher interest expense and labor costs. Adjusted EBITDA grew 10% over the prior year to $144.2 million and adjusted EBITDA margin increased 40 basis points to 7.2%. These year-over-year improvements were driven by higher segment earnings including several project closeouts in Technical Solutions and normalized performance in Aviation as compared to the prior year, which was impacted by adverse project timing. Now turning to our segment results, beginning on Slide 7. B&I revenue increased modestly to $1 billion, partly due to strong sport and special event demand, which helped to offset reduced demand in the commercial real estate market.
Operating profit in B&I decreased to $84.6 million and operating margin declined to 8.2%, as adverse service mix was partially offset by price increases and cost actions. Aviation grew 16% to $248.2 million, once again driven by strong demand for leisure and business travel, and new business wins. We expect demand within our Aviation segment to remain robust going forward. Aviation’s operating profit was $16.4 million versus $1.3 million in the prior year period and operating margin expanded significantly to 6.6%. These increases reflected the absence of the adverse project timing, which negatively impacted the prior year period, as well as benefits of higher volume and price increases. Turning to Slide 8, Manufacturing and Distribution revenue grew 5% to $391.2 million, reflecting broad-based demand.
Operating profit increased to $42 million, while operating margin declined 40 basis points to 10.7%. Profit and margin performance was largely due to customer mix. Education revenue increased 6% to $229.8 million, benefiting from the addition of new clients earlier in the year. Education operating profit was $10.2 million, up 23% over the prior year period, while margin increased 60 basis points to 4.4%. These increases were largely attributable to increased organic revenue growth and a modestly improved labor market. Technical Solutions grew 6% over the prior year period to $190.8 million, comprised of an even split between organic growth and acquisition contribution. This performance largely reflecting the close-out of several legacy projects and progress on battery storage system projects.
