Finding the Fourth Proportional to 256,250.88, 384,191.52 and 156,387.60

Step by Step Solution

1. Step 1: Write the proportion equation
   256,250.88 : 384,191.52 = 156,387.60 : x
2. Step 2: Convert to fraction form
   256,250.88/384,191.52 = 156,387.60/x
3. Step 3: Cross multiply
   256,250.88x = 384,191.52 × 156,387.60
4. Step 4: Simplify right side
   256,250.88x = 60,082,789,753.15
5. Step 5: Solve for x
   x = 60,082,789,753.15/256,250.88
6. Step 6: Final answer
   x = 234,468.62