Finding the Fourth Proportional to 156,920.28, 216,554.72 and 88,937.39

Step by Step Solution

1. Step 1: Write the proportion equation
   156,920.28 : 216,554.72 = 88,937.39 : x
2. Step 2: Convert to fraction form
   156,920.28/216,554.72 = 88,937.39/x
3. Step 3: Cross multiply
   156,920.28x = 216,554.72 × 88,937.39
4. Step 4: Simplify right side
   156,920.28x = 19,259,810,061.52
5. Step 5: Solve for x
   x = 19,259,810,061.52/156,920.28
6. Step 6: Final answer
   x = 122,736.27