 Hugh Schofield reporting. The son of Asia's richest man is marrying the daughter of pharmaceutical tycoons in a three-day wedding ceremony getting underway in the Indian city of Mumbai. A host of stars and dignitaries will be there to see Anantambani, the youngest son of the chairman of Reliance Industries Mukesh, tie the knot with his long-time sweetheart Radhika Merchant. The families are thought to be spending at least $250 million on the mega-wedding.