Finding the Fourth Proportional to 86,661, 129,989.34 and 27,500.04

Step by Step Solution

1. Step 1: Write the proportion equation
   86,661 : 129,989.34 = 27,500.04 : x
2. Step 2: Convert to fraction form
   86,661/129,989.34 = 27,500.04/x
3. Step 3: Cross multiply
   86,661x = 129,989.34 × 27,500.04
4. Step 4: Simplify right side
   86,661x = 3,574,712,049.57
5. Step 5: Solve for x
   x = 3,574,712,049.57/86,661
6. Step 6: Final answer
   x = 41,249.37