Where does “𑀅𑀟𑁆𑀠𑀼𑀝𑁆𑀞” come from?

𑀅𑀟𑁆𑀠𑀼𑀝𑁆𑀞 (Prakrit) comes from Sanskrit अर्धचतुर्थ, from Sanskrit अर्ध, from Proto-Indo-Iranian Hárdʰas, from Proto-Indo-European h₁érdʰ-o-s, from Proto-Indo-European h₁er- — earth.

Ancestry of “𑀅𑀟𑁆𑀠𑀼𑀝𑁆𑀞”, step by step

Step	Language	Word	Meaning
1	Sanskrit	अर्धचतुर्थ	three and a half
2	Sanskrit	अर्ध	half, halved, forming a half; the half; one part...
3	Proto-Indo-Iranian	Hárdʰas	division, half
4	Proto-Indo-European	h₁érdʰ-o-s	—
5	Proto-Indo-European	h₁er-	earth

Every word from Proto-Indo-European h₁er- →Every word from Proto-Indo-European h₁érdʰ-o-s →Every word from Proto-Indo-Iranian Hárdʰas →