Finding the Fourth Proportional to 209,086.29, 288,538.32 and 113,592.15

Step by Step Solution

1. Step 1: Write the proportion equation
   209,086.29 : 288,538.32 = 113,592.15 : x
2. Step 2: Convert to fraction form
   209,086.29/288,538.32 = 113,592.15/x
3. Step 3: Cross multiply
   209,086.29x = 288,538.32 × 113,592.15
4. Step 4: Simplify right side
   209,086.29x = 32,775,688,126.19
5. Step 5: Solve for x
   x = 32,775,688,126.19/209,086.29
6. Step 6: Final answer
   x = 156,756.75