Finding the Fourth Proportional to 86,658.05, 130,035.11 and 42,285.17

Step by Step Solution

1. Step 1: Write the proportion equation
   86,658.05 : 130,035.11 = 42,285.17 : x
2. Step 2: Convert to fraction form
   86,658.05/130,035.11 = 42,285.17/x
3. Step 3: Cross multiply
   86,658.05x = 130,035.11 × 42,285.17
4. Step 4: Simplify right side
   86,658.05x = 5,498,555,870.72
5. Step 5: Solve for x
   x = 5,498,555,870.72/86,658.05
6. Step 6: Final answer
   x = 63,451.19