The title 'Vairigharatta' signifies a formidable warrior who crushes enemies. While Durlabhraja II, Arnoraja, and Vigraharaja IV were powerful Chauhan rulers, Govinda III was a Rashtrakuta ruler from a different dynasty and era. The epic 'Prithviraja Vijaya' primarily focuses on Prithviraja Chauhan. The inclusion of Govinda III with this title from this specific text is historically contentious and suggests a potential flaw in the question or its premise.