Finding the Fourth Proportional to 208,046.71, 287,103.72 and 112,553.43

Step by Step Solution

1. Step 1: Write the proportion equation
   208,046.71 : 287,103.72 = 112,553.43 : x
2. Step 2: Convert to fraction form
   208,046.71/287,103.72 = 112,553.43/x
3. Step 3: Cross multiply
   208,046.71x = 287,103.72 × 112,553.43
4. Step 4: Simplify right side
   208,046.71x = 32,314,508,451.76
5. Step 5: Solve for x
   x = 32,314,508,451.76/208,046.71
6. Step 6: Final answer
   x = 155,323.33