Finding the Fourth Proportional to 86,086.76, 129,143.50 and 43,944.02

Step by Step Solution

1. Step 1: Write the proportion equation
   86,086.76 : 129,143.50 = 43,944.02 : x
2. Step 2: Convert to fraction form
   86,086.76/129,143.50 = 43,944.02/x
3. Step 3: Cross multiply
   86,086.76x = 129,143.50 × 43,944.02
4. Step 4: Simplify right side
   86,086.76x = 5,675,084,546.87
5. Step 5: Solve for x
   x = 5,675,084,546.87/86,086.76
6. Step 6: Final answer
   x = 65,922.85