Finding the Fourth Proportional to 156,426.96, 234,710.21 and 72,141.88

Step by Step Solution

1. Step 1: Write the proportion equation
   156,426.96 : 234,710.21 = 72,141.88 : x
2. Step 2: Convert to fraction form
   156,426.96/234,710.21 = 72,141.88/x
3. Step 3: Cross multiply
   156,426.96x = 234,710.21 × 72,141.88
4. Step 4: Simplify right side
   156,426.96x = 16,932,435,398.17
5. Step 5: Solve for x
   x = 16,932,435,398.17/156,426.96
6. Step 6: Final answer
   x = 108,244.99