Carlos Slim Helu - $77,100,000,000
Telecom magnate Carlos Slim Helu has some 300 million mobile phone and land-line subscribers in 19 countries through America Movil, which he controls. His lock on Mexico's telecom market -- America Movil units have had a 70% share of the mobile phone market and 80% of landlines -- will be loosened under a Mexican law passed last year that forbids companies from controlling more than 50% of telecom and broadcast markets. Slim has been buying assets in Spain and has bid on oil production contracts in Mexico, which opened to private and foreign capital for the first time in 8 decades. On the philanthropic side, in July his Carlos Slim Foundation partnered with the nonprofit Autism Speaks to translate information and tools into Spanish.