Finding the Fourth Proportional to 156,006.72, 215,289.31 and 88,038.10

Step by Step Solution

1. Step 1: Write the proportion equation
   156,006.72 : 215,289.31 = 88,038.10 : x
2. Step 2: Convert to fraction form
   156,006.72/215,289.31 = 88,038.10/x
3. Step 3: Cross multiply
   156,006.72x = 215,289.31 × 88,038.10
4. Step 4: Simplify right side
   156,006.72x = 18,953,661,802.71
5. Step 5: Solve for x
   x = 18,953,661,802.71/156,006.72
6. Step 6: Final answer
   x = 121,492.60