The answer is 369,070.
5678 x 5678 = 32239684
5678*1 = 5678
39,746
97.8966
4,536 x 5,678 = 25,755,408
72% of 5678 = 5678/100 x 72 = 4088.16
5678 + 69022 = 74700
5678 + 7467 = 13,145
5678 + 2987 = 8,665
42+5678 = 5720
7908 + 5678 = 13,586
sqrt(5678) = 75.35 approx.