Finding the Fourth Proportional to 208,801.02, 288,150.96 and 113,307.78

Step by Step Solution

1. Step 1: Write the proportion equation
   208,801.02 : 288,150.96 = 113,307.78 : x
2. Step 2: Convert to fraction form
   208,801.02/288,150.96 = 113,307.78/x
3. Step 3: Cross multiply
   208,801.02x = 288,150.96 × 113,307.78
4. Step 4: Simplify right side
   208,801.02x = 32,649,745,582.47
5. Step 5: Solve for x
   x = 32,649,745,582.47/208,801.02
6. Step 6: Final answer
   x = 156,367.75