Success Story of Carlos Slim Helu. Published July 27, 2019 by Md Saud 0 Success Story of Carlos Slim Helu. Carlos Slim Helú (Spanish pronunciation: [ˈkaɾlos ezˈlim eˈlu]; born 28 January 1940) is a Mexican business magnate, engineer, investor, and philanthropist. From 2010 to 2013, Slim was ranked as the richest person in the…