Finding the Fourth Proportional to 254,082.88, 381,142.88 and 85,603.52

Step by Step Solution

1. Step 1: Write the proportion equation
   254,082.88 : 381,142.88 = 85,603.52 : x
2. Step 2: Convert to fraction form
   254,082.88/381,142.88 = 85,603.52/x
3. Step 3: Cross multiply
   254,082.88x = 381,142.88 × 85,603.52
4. Step 4: Simplify right side
   254,082.88x = 32,627,172,150.94
5. Step 5: Solve for x
   x = 32,627,172,150.94/254,082.88
6. Step 6: Final answer
   x = 128,411.53