Finding the Fourth Proportional to 156,110.72, 215,436.16 and 88,114.72

Step by Step Solution

1. Step 1: Write the proportion equation
   156,110.72 : 215,436.16 = 88,114.72 : x
2. Step 2: Convert to fraction form
   156,110.72/215,436.16 = 88,114.72/x
3. Step 3: Cross multiply
   156,110.72x = 215,436.16 × 88,114.72
4. Step 4: Simplify right side
   156,110.72x = 18,983,096,916.28
5. Step 5: Solve for x
   x = 18,983,096,916.28/156,110.72
6. Step 6: Final answer
   x = 121,600.21