Finding the Fourth Proportional to 208,082.52, 287,151.78 and 112,587.12

Step by Step Solution

1. Step 1: Write the proportion equation
   208,082.52 : 287,151.78 = 112,587.12 : x
2. Step 2: Convert to fraction form
   208,082.52/287,151.78 = 112,587.12/x
3. Step 3: Cross multiply
   208,082.52x = 287,151.78 × 112,587.12
4. Step 4: Simplify right side
   208,082.52x = 32,329,591,913.07
5. Step 5: Solve for x
   x = 32,329,591,913.07/208,082.52
6. Step 6: Final answer
   x = 155,369.09