Finding the Fourth Proportional to 208,852.38, 288,216.54 and 113,359.05

Step by Step Solution

1. Step 1: Write the proportion equation
   208,852.38 : 288,216.54 = 113,359.05 : x
2. Step 2: Convert to fraction form
   208,852.38/288,216.54 = 113,359.05/x
3. Step 3: Cross multiply
   208,852.38x = 288,216.54 × 113,359.05
4. Step 4: Simplify right side
   208,852.38x = 32,671,953,168.69
5. Step 5: Solve for x
   x = 32,671,953,168.69/208,852.38
6. Step 6: Final answer
   x = 156,435.63