Finding the Fourth Proportional to 209,129.82, 288,600.98 and 113,636.52

Step by Step Solution

1. Step 1: Write the proportion equation
   209,129.82 : 288,600.98 = 113,636.52 : x
2. Step 2: Convert to fraction form
   209,129.82/288,600.98 = 113,636.52/x
3. Step 3: Cross multiply
   209,129.82x = 288,600.98 × 113,636.52
4. Step 4: Simplify right side
   209,129.82x = 32,795,609,592.78
5. Step 5: Solve for x
   x = 32,795,609,592.78/209,129.82
6. Step 6: Final answer
   x = 156,819.38