Finding the Fourth Proportional to 156,789.79, 216,250.69 and 108,472.10

Step by Step Solution

1. Step 1: Write the proportion equation
   156,789.79 : 216,250.69 = 108,472.10 : x
2. Step 2: Convert to fraction form
   156,789.79/216,250.69 = 108,472.10/x
3. Step 3: Cross multiply
   156,789.79x = 216,250.69 × 108,472.10
4. Step 4: Simplify right side
   156,789.79x = 23,457,166,470.75
5. Step 5: Solve for x
   x = 23,457,166,470.75/156,789.79
6. Step 6: Final answer
   x = 149,609.02