Mukesh Dhirubhai Ambani is an Indian business tycoon. He is the chairman, managing director and the largest shareholder of Reliance Industries Limited (RIL). Since 1981, he started working alongside his father Dhirubhai Ambani in their family business, Reliance. RIL deals mainly in petrochemicals, refining and in the oil and gas sectors. Over the years, the business has expanded to provide products and services like Retail Markets and Telecommunications. In the country’s telecommunication services, Reliance’s Jio has earned a top five spot. It was launched on September 5, 2016. On the Forbes magazine's list for the past ten years, Ambani has consistently held the title of being India's richest person. As of January 2018, by Forbes, he was ranked as the 18th-wealthiest person in the world. With a net worth of $44.3 billion in July 2018, he surpassed Jack Ma, executive chairman of Alibaba Group, to become Asia's richest person. Outside North America and Europe, he is also the wealthiest person in the world. He also owns the Indian Premier League franchise Mumbai Indians. At the Antilia Building, Ambani resides. With its value reaching $1 billion, it is one of the world's most expensive private residences. Early life: Mukesh was born in Aden, Yemen. He was brought up in Mumbai, India. In the early 1970s, in Chemical Engineering, he received his degree from the Institute of Chemical Technology.