Finding the Fourth Proportional to 156,932.38, 235,471.56 and 72,645.40

Step by Step Solution

1. Step 1: Write the proportion equation
   156,932.38 : 235,471.56 = 72,645.40 : x
2. Step 2: Convert to fraction form
   156,932.38/235,471.56 = 72,645.40/x
3. Step 3: Cross multiply
   156,932.38x = 235,471.56 × 72,645.40
4. Step 4: Simplify right side
   156,932.38x = 17,105,925,664.82
5. Step 5: Solve for x
   x = 17,105,925,664.82/156,932.38
6. Step 6: Final answer
   x = 109,001.89