Declension table of ?mahārathatva

Neuter	Singular	Dual	Plural
Nominative	mahārathatvam	mahārathatve	mahārathatvāni
Vocative	mahārathatva	mahārathatve	mahārathatvāni
Accusative	mahārathatvam	mahārathatve	mahārathatvāni
Instrumental	mahārathatvena	mahārathatvābhyām	mahārathatvaiḥ
Dative	mahārathatvāya	mahārathatvābhyām	mahārathatvebhyaḥ
Ablative	mahārathatvāt	mahārathatvābhyām	mahārathatvebhyaḥ
Genitive	mahārathatvasya	mahārathatvayoḥ	mahārathatvānām
Locative	mahārathatve	mahārathatvayoḥ	mahārathatveṣu

Compound mahārathatva -

Adverb -mahārathatvam -mahārathatvāt