Finding the Fourth Proportional to 156,938.38, 235,480.56 and 72,651.40

Step by Step Solution

1. Step 1: Write the proportion equation
   156,938.38 : 235,480.56 = 72,651.40 : x
2. Step 2: Convert to fraction form
   156,938.38/235,480.56 = 72,651.40/x
3. Step 3: Cross multiply
   156,938.38x = 235,480.56 × 72,651.40
4. Step 4: Simplify right side
   156,938.38x = 17,107,992,356.78
5. Step 5: Solve for x
   x = 17,107,992,356.78/156,938.38
6. Step 6: Final answer
   x = 109,010.89