Question

1:2:3 when we add there cube we get 98784

Answer 1

the answer is 14:28:42.
firstly let the first number be x
and 2nd number be 2x
and third number be 3x

then, x^3 + 8x^3 + 9x^3 =98784
or, 36 x^3 = 98784
or, x^3 = 2744
or, x. = 14

then the anwer is 14 : 28 :42