Finding the Fourth Proportional to 106,425.68, 146,868.42 and 58,680.72

Step by Step Solution

1. Step 1: Write the proportion equation
   106,425.68 : 146,868.42 = 58,680.72 : x
2. Step 2: Convert to fraction form
   106,425.68/146,868.42 = 58,680.72/x
3. Step 3: Cross multiply
   106,425.68x = 146,868.42 × 58,680.72
4. Step 4: Simplify right side
   106,425.68x = 8,618,344,630.86
5. Step 5: Solve for x
   x = 8,618,344,630.86/106,425.68
6. Step 6: Final answer
   x = 80,979.94