Finding the Fourth Proportional to 102,425.42, 141,378.32 and 59,415.78

Step by Step Solution

1. Step 1: Write the proportion equation
   102,425.42 : 141,378.32 = 59,415.78 : x
2. Step 2: Convert to fraction form
   102,425.42/141,378.32 = 59,415.78/x
3. Step 3: Cross multiply
   102,425.42x = 141,378.32 × 59,415.78
4. Step 4: Simplify right side
   102,425.42x = 8,400,103,157.89
5. Step 5: Solve for x
   x = 8,400,103,157.89/102,425.42
6. Step 6: Final answer
   x = 82,011.90