Finding the Fourth Proportional to 156,436.67, 234,724.76 and 72,151.50

Step by Step Solution

1. Step 1: Write the proportion equation
   156,436.67 : 234,724.76 = 72,151.50 : x
2. Step 2: Convert to fraction form
   156,436.67/234,724.76 = 72,151.50/x
3. Step 3: Cross multiply
   156,436.67x = 234,724.76 × 72,151.50
4. Step 4: Simplify right side
   156,436.67x = 16,935,743,160.38
5. Step 5: Solve for x
   x = 16,935,743,160.38/156,436.67
6. Step 6: Final answer
   x = 108,259.42