Finding the Fourth Proportional to 86,014.57, 129,039.80 and 43,343.98

Step by Step Solution

1. Step 1: Write the proportion equation
   86,014.57 : 129,039.80 = 43,343.98 : x
2. Step 2: Convert to fraction form
   86,014.57/129,039.80 = 43,343.98/x
3. Step 3: Cross multiply
   86,014.57x = 129,039.80 × 43,343.98
4. Step 4: Simplify right side
   86,014.57x = 5,593,098,510.40
5. Step 5: Solve for x
   x = 5,593,098,510.40/86,014.57
6. Step 6: Final answer
   x = 65,025.01