Indonesia’s tycoons strengthened their dominance of the Southeast Asia rich list in October, led by energy and petrochemicals magnate Prajogo Pangestu with an estimated net worth of USD41.5bn, according to Forbes-based rankings. Coal producer Bayan Resources founder Low Tuck Kwong followed with USD25.2bn, while banking and tobacco heirs Robert Budi Hartono and Michael Hartono ranked next at about USD19.4bn and USD18.6bn respectively. Outside Indonesia, Vietnam’s Vingroup foun