Finding the Fourth Proportional to 156,632.49, 216,101.39 and 88,642.71

Step by Step Solution

1. Step 1: Write the proportion equation
   156,632.49 : 216,101.39 = 88,642.71 : x
2. Step 2: Convert to fraction form
   156,632.49/216,101.39 = 88,642.71/x
3. Step 3: Cross multiply
   156,632.49x = 216,101.39 × 88,642.71
4. Step 4: Simplify right side
   156,632.49x = 19,155,812,401.15
5. Step 5: Solve for x
   x = 19,155,812,401.15/156,632.49
6. Step 6: Final answer
   x = 122,297.82