Finding the Fourth Proportional to 102,352.42, 141,256.72 and 57,037.78

Step by Step Solution

1. Step 1: Write the proportion equation
   102,352.42 : 141,256.72 = 57,037.78 : x
2. Step 2: Convert to fraction form
   102,352.42/141,256.72 = 57,037.78/x
3. Step 3: Cross multiply
   102,352.42x = 141,256.72 × 57,037.78
4. Step 4: Simplify right side
   102,352.42x = 8,056,969,718.88
5. Step 5: Solve for x
   x = 8,056,969,718.88/102,352.42
6. Step 6: Final answer
   x = 78,717.92