Declension table of ?mahārthaka

Masculine	Singular	Dual	Plural
Nominative	mahārthakaḥ	mahārthakau	mahārthakāḥ
Vocative	mahārthaka	mahārthakau	mahārthakāḥ
Accusative	mahārthakam	mahārthakau	mahārthakān
Instrumental	mahārthakena	mahārthakābhyām	mahārthakaiḥ mahārthakebhiḥ
Dative	mahārthakāya	mahārthakābhyām	mahārthakebhyaḥ
Ablative	mahārthakāt	mahārthakābhyām	mahārthakebhyaḥ
Genitive	mahārthakasya	mahārthakayoḥ	mahārthakānām
Locative	mahārthake	mahārthakayoḥ	mahārthakeṣu

Compound mahārthaka -

Adverb -mahārthakam -mahārthakāt