Complex sentence: The Grihasta earns his livelihood by whatever a vocation befitting his being a member of his group, raising children, supporting his own family, kith and kin besides the persons performing their duties in the other three Ashramas.
Split into simpler sentences: The Grihasta earns his livelihood by whatever vocation befits him, raises children, and supports his own family, kith and kin. He also supports the persons performing their duties in the other three Ashramas.