To find out what must be added to the sum of 52678, 19395, and 86430 to make 160000, we first need to calculate the sum of these three numbers.
- Calculate the sum:
\[ 52678 + 19395 + 86430 = 158503 \]
- Next, to find out what must be added to this sum to reach 160000, we subtract the sum from 160000:
\[ 160000 - 158503 = 1497 \]
Therefore, you must add 1497 to the sum of 52678, 19395, and 86430 to make 160000.