Finding the Fourth Proportional to 208,801.42, 288,146.73 and 113,308.12

Step by Step Solution

1. Step 1: Write the proportion equation
   208,801.42 : 288,146.73 = 113,308.12 : x
2. Step 2: Convert to fraction form
   208,801.42/288,146.73 = 113,308.12/x
3. Step 3: Cross multiply
   208,801.42x = 288,146.73 × 113,308.12
4. Step 4: Simplify right side
   208,801.42x = 32,649,364,260.45
5. Step 5: Solve for x
   x = 32,649,364,260.45/208,801.42
6. Step 6: Final answer
   x = 156,365.62