first we apply Euclid's division algorithm on 92690 and 7378
We know algorithm
a= bq + r where 0≤ r < b And a > b
So here
a = 92690 And b = 7378 , So
92690 = 7378 × 13 + 4154
7378 = 4154 × 1 + 3224
4154 = 3224 × 1 + 930
3224 = 930 × 3 + 434
934 = 434 × 2 + 62
434 = 62 × 7 + 0
Here r = 0 So H.C.F. of 92690 and 7378 is 62
Now apply Euclid division algorithm on 62 and 7161
Here a = 7161 and b = 62 ,So
7161 = 62 × 115 + 31
62 = 31 × 2 + 0
Here r= 0 , So h.C.F. of 62 and 7161 is 31 .
Hence H.C.F. of 92690 , 7378 and 7161 is = 31