Finding the Fourth Proportional to 208,047.71, 287,105.10 and 112,554.43

Step by Step Solution

1. Step 1: Write the proportion equation
   208,047.71 : 287,105.10 = 112,554.43 : x
2. Step 2: Convert to fraction form
   208,047.71/287,105.10 = 112,554.43/x
3. Step 3: Cross multiply
   208,047.71x = 287,105.10 × 112,554.43
4. Step 4: Simplify right side
   208,047.71x = 32,314,950,880.59
5. Step 5: Solve for x
   x = 32,314,950,880.59/208,047.71
6. Step 6: Final answer
   x = 155,324.71