Finding the Fourth Proportional to 94,457.46, 140,949.42 and 86,073.96

Step by Step Solution

1. Step 1: Write the proportion equation
   94,457.46 : 140,949.42 = 86,073.96 : x
2. Step 2: Convert to fraction form
   94,457.46/140,949.42 = 86,073.96/x
3. Step 3: Cross multiply
   94,457.46x = 140,949.42 × 86,073.96
4. Step 4: Simplify right side
   94,457.46x = 12,132,074,739.10
5. Step 5: Solve for x
   x = 12,132,074,739.10/94,457.46
6. Step 6: Final answer
   x = 128,439.56