Declension table of ?samārthaka

Neuter	Singular	Dual	Plural
Nominative	samārthakam	samārthake	samārthakāni
Vocative	samārthaka	samārthake	samārthakāni
Accusative	samārthakam	samārthake	samārthakāni
Instrumental	samārthakena	samārthakābhyām	samārthakaiḥ
Dative	samārthakāya	samārthakābhyām	samārthakebhyaḥ
Ablative	samārthakāt	samārthakābhyām	samārthakebhyaḥ
Genitive	samārthakasya	samārthakayoḥ	samārthakānām
Locative	samārthake	samārthakayoḥ	samārthakeṣu

Compound samārthaka -

Adverb -samārthakam -samārthakāt