Finding the Fourth Proportional to 208,851.98, 288,216.06 and 113,358.71

Step by Step Solution

1. Step 1: Write the proportion equation
   208,851.98 : 288,216.06 = 113,358.71 : x
2. Step 2: Convert to fraction form
   208,851.98/288,216.06 = 113,358.71/x
3. Step 3: Cross multiply
   208,851.98x = 288,216.06 × 113,358.71
4. Step 4: Simplify right side
   208,851.98x = 32,671,800,196.09
5. Step 5: Solve for x
   x = 32,671,800,196.09/208,851.98
6. Step 6: Final answer
   x = 156,435.20