Finding the Fourth Proportional to 86,618.98, 129,823.83 and 42,179.14

Step by Step Solution

1. Step 1: Write the proportion equation
   86,618.98 : 129,823.83 = 42,179.14 : x
2. Step 2: Convert to fraction form
   86,618.98/129,823.83 = 42,179.14/x
3. Step 3: Cross multiply
   86,618.98x = 129,823.83 × 42,179.14
4. Step 4: Simplify right side
   86,618.98x = 5,475,857,500.91
5. Step 5: Solve for x
   x = 5,475,857,500.91/86,618.98
6. Step 6: Final answer
   x = 63,217.76