Finding the Fourth Proportional to 208,033.76, 287,086.72 and 112,540.16

Step by Step Solution

1. Step 1: Write the proportion equation
   208,033.76 : 287,086.72 = 112,540.16 : x
2. Step 2: Convert to fraction form
   208,033.76/287,086.72 = 112,540.16/x
3. Step 3: Cross multiply
   208,033.76x = 287,086.72 × 112,540.16
4. Step 4: Simplify right side
   208,033.76x = 32,308,785,402.68
5. Step 5: Solve for x
   x = 32,308,785,402.68/208,033.76
6. Step 6: Final answer
   x = 155,305.49