Finding the Fourth Proportional to 86,258.02, 129,399.18 and 30,089.94

Step by Step Solution

1. Step 1: Write the proportion equation
   86,258.02 : 129,399.18 = 30,089.94 : x
2. Step 2: Convert to fraction form
   86,258.02/129,399.18 = 30,089.94/x
3. Step 3: Cross multiply
   86,258.02x = 129,399.18 × 30,089.94
4. Step 4: Simplify right side
   86,258.02x = 3,893,613,562.25
5. Step 5: Solve for x
   x = 3,893,613,562.25/86,258.02
6. Step 6: Final answer
   x = 45,139.15