Finding the Fourth Proportional to 209,104.50, 288,566.83 and 113,612.79

Step by Step Solution

1. Step 1: Write the proportion equation
   209,104.50 : 288,566.83 = 113,612.79 : x
2. Step 2: Convert to fraction form
   209,104.50/288,566.83 = 113,612.79/x
3. Step 3: Cross multiply
   209,104.50x = 288,566.83 × 113,612.79
4. Step 4: Simplify right side
   209,104.50x = 32,784,880,930.89
5. Step 5: Solve for x
   x = 32,784,880,930.89/209,104.50
6. Step 6: Final answer
   x = 156,787.07