Finding the Fourth Proportional to 208,807.31, 288,154.27 and 113,314

Step by Step Solution

1. Step 1: Write the proportion equation
   208,807.31 : 288,154.27 = 113,314 : x
2. Step 2: Convert to fraction form
   208,807.31/288,154.27 = 113,314/x
3. Step 3: Cross multiply
   208,807.31x = 288,154.27 × 113,314
4. Step 4: Simplify right side
   208,807.31x = 32,651,912,950.78
5. Step 5: Solve for x
   x = 32,651,912,950.78/208,807.31
6. Step 6: Final answer
   x = 156,373.42