Finding the Fourth Proportional to 86,662, 129,976.56 and 42,244.08

Step by Step Solution

1. Step 1: Write the proportion equation
   86,662 : 129,976.56 = 42,244.08 : x
2. Step 2: Convert to fraction form
   86,662/129,976.56 = 42,244.08/x
3. Step 3: Cross multiply
   86,662x = 129,976.56 × 42,244.08
4. Step 4: Simplify right side
   86,662x = 5,490,740,198.76
5. Step 5: Solve for x
   x = 5,490,740,198.76/86,662
6. Step 6: Final answer
   x = 63,358.11