97. Edward Roski Jr.
His Majestic Realty is developing a 441-acre business park on the site of a former Bethlehem Steel plant in Pennsylvania; tenants will include Crayola and Wal-mart. Majestic, which his father founded in 1948, owns 83 million square feet of commercial real estate in California, Georgia, Nevada and Colorado. Roski met his wife, Gayle, at USC when they were both undergraduates; in 2016, they announced a $25 million gift to endow an eye institute there.