Let share of each friend = a.
Then, share of each daughter = 4a.
and share of each son = 5a.
According to the question,
5 x 5a + 4 x 4a + 2 x a = 17200
⇒ 25x + 16x + 2x = 17200
⇒ 43x = 17200
∴ x = 17200/43 = 400
∴ Share of each daughter
= 4x = 4 x 400
= ₹ 1600