Finding the Fourth Proportional to 156,991.02, 216,653.31 and 89,935.98

Step by Step Solution

1. Step 1: Write the proportion equation
   156,991.02 : 216,653.31 = 89,935.98 : x
2. Step 2: Convert to fraction form
   156,991.02/216,653.31 = 89,935.98/x
3. Step 3: Cross multiply
   156,991.02x = 216,653.31 × 89,935.98
4. Step 4: Simplify right side
   156,991.02x = 19,484,927,755.09
5. Step 5: Solve for x
   x = 19,484,927,755.09/156,991.02
6. Step 6: Final answer
   x = 124,114.92