Finding the Fourth Proportional to 209,247.48, 288,767.34 and 113,760.72

Step by Step Solution

1. Step 1: Write the proportion equation
   209,247.48 : 288,767.34 = 113,760.72 : x
2. Step 2: Convert to fraction form
   209,247.48/288,767.34 = 113,760.72/x
3. Step 3: Cross multiply
   209,247.48x = 288,767.34 × 113,760.72
4. Step 4: Simplify right side
   209,247.48x = 32,850,380,510.88
5. Step 5: Solve for x
   x = 32,850,380,510.88/209,247.48
6. Step 6: Final answer
   x = 156,992.96