Finding the Fourth Proportional to 209,222.91, 288,727.83 and 113,729.61

Step by Step Solution

1. Step 1: Write the proportion equation
   209,222.91 : 288,727.83 = 113,729.61 : x
2. Step 2: Convert to fraction form
   209,222.91/288,727.83 = 113,729.61/x
3. Step 3: Cross multiply
   209,222.91x = 288,727.83 × 113,729.61
4. Step 4: Simplify right side
   209,222.91x = 32,836,903,502.05
5. Step 5: Solve for x
   x = 32,836,903,502.05/209,222.91
6. Step 6: Final answer
   x = 156,946.98