Finding the Fourth Proportional to 208,801.37, 288,146.70 and 113,308.10

Step by Step Solution

1. Step 1: Write the proportion equation
   208,801.37 : 288,146.70 = 113,308.10 : x
2. Step 2: Convert to fraction form
   208,801.37/288,146.70 = 113,308.10/x
3. Step 3: Cross multiply
   208,801.37x = 288,146.70 × 113,308.10
4. Step 4: Simplify right side
   208,801.37x = 32,649,353,657.54
5. Step 5: Solve for x
   x = 32,649,353,657.54/208,801.37
6. Step 6: Final answer
   x = 156,365.61