Finding the Fourth Proportional to 86,379.97, 129,607.61 and 30,260.34

Step by Step Solution

1. Step 1: Write the proportion equation
   86,379.97 : 129,607.61 = 30,260.34 : x
2. Step 2: Convert to fraction form
   86,379.97/129,607.61 = 30,260.34/x
3. Step 3: Cross multiply
   86,379.97x = 129,607.61 × 30,260.34
4. Step 4: Simplify right side
   86,379.97x = 3,921,969,707.86
5. Step 5: Solve for x
   x = 3,921,969,707.86/86,379.97
6. Step 6: Final answer
   x = 45,403.69