49/Tech 7: Michael Dell
Michael Dell has been extensively in the news lately for plans to take his company private. His $15.3 billion bankroll earns him the No. 49 position in the Forbes worldwide countdown. According to the publication, much of Dell's assets are now in his investment firm, MSD Capital, which is active in the banking, real estate, dental and landscaping sectors. He also has taken to philanthropy, focused mostly on urban poverty and health of children. Dell also announced plans for this foundation to donate $50 million to the University of Texas for the construction of a new medical school, which is expected to be named in Dell's honor.