Finding the Fourth Proportional to 86,141.41, 129,080.22 and 57,957.05

Step by Step Solution

1. Step 1: Write the proportion equation
   86,141.41 : 129,080.22 = 57,957.05 : x
2. Step 2: Convert to fraction form
   86,141.41/129,080.22 = 57,957.05/x
3. Step 3: Cross multiply
   86,141.41x = 129,080.22 × 57,957.05
4. Step 4: Simplify right side
   86,141.41x = 7,481,108,869.91
5. Step 5: Solve for x
   x = 7,481,108,869.91/86,141.41
6. Step 6: Final answer
   x = 86,846.84