Finding the Fourth Proportional to 209,014.29, 288,443.03 and 113,520.69

Step by Step Solution

1. Step 1: Write the proportion equation
   209,014.29 : 288,443.03 = 113,520.69 : x
2. Step 2: Convert to fraction form
   209,014.29/288,443.03 = 113,520.69/x
3. Step 3: Cross multiply
   209,014.29x = 288,443.03 × 113,520.69
4. Step 4: Simplify right side
   209,014.29x = 32,744,251,223.69
5. Step 5: Solve for x
   x = 32,744,251,223.69/209,014.29
6. Step 6: Final answer
   x = 156,660.35