Finding the Fourth Proportional to 208,856.88, 288,222.84 and 113,363.55

Step by Step Solution

1. Step 1: Write the proportion equation
   208,856.88 : 288,222.84 = 113,363.55 : x
2. Step 2: Convert to fraction form
   208,856.88/288,222.84 = 113,363.55/x
3. Step 3: Cross multiply
   208,856.88x = 288,222.84 × 113,363.55
4. Step 4: Simplify right side
   208,856.88x = 32,673,964,333.48
5. Step 5: Solve for x
   x = 32,673,964,333.48/208,856.88
6. Step 6: Final answer
   x = 156,441.89