Isha Ambani, daughter of Reliance Industries Chairman Mukesh Ambani, is getting formally engaged to Anand Piramal, son of Piramal Group Chairman Ajay Piramal. Mukesh Ambani is Asia's richest man with a net worth of around $47 billion according to Forbes. Ajay Piramal is the 404th richest person in the world, with a net worth of $4.8 billion.