Finding the Fourth Proportional to 208,363.52, 287,541.39 and 112,870.60

Step by Step Solution

1. Step 1: Write the proportion equation
   208,363.52 : 287,541.39 = 112,870.60 : x
2. Step 2: Convert to fraction form
   208,363.52/287,541.39 = 112,870.60/x
3. Step 3: Cross multiply
   208,363.52x = 287,541.39 × 112,870.60
4. Step 4: Simplify right side
   208,363.52x = 32,454,968,918.55
5. Step 5: Solve for x
   x = 32,454,968,918.55/208,363.52
6. Step 6: Final answer
   x = 155,761.28