Finding the Fourth Proportional to 208,085.55, 287,157.33 and 112,591.83

Step by Step Solution

1. Step 1: Write the proportion equation
   208,085.55 : 287,157.33 = 112,591.83 : x
2. Step 2: Convert to fraction form
   208,085.55/287,157.33 = 112,591.83/x
3. Step 3: Cross multiply
   208,085.55x = 287,157.33 × 112,591.83
4. Step 4: Simplify right side
   208,085.55x = 32,331,569,282.61
5. Step 5: Solve for x
   x = 32,331,569,282.61/208,085.55
6. Step 6: Final answer
   x = 155,376.33