Finding the Fourth Proportional to 82,879.59, 114,414.69 and 57,405.30

Step by Step Solution

1. Step 1: Write the proportion equation
   82,879.59 : 114,414.69 = 57,405.30 : x
2. Step 2: Convert to fraction form
   82,879.59/114,414.69 = 57,405.30/x
3. Step 3: Cross multiply
   82,879.59x = 114,414.69 × 57,405.30
4. Step 4: Simplify right side
   82,879.59x = 6,568,009,603.86
5. Step 5: Solve for x
   x = 6,568,009,603.86/82,879.59
6. Step 6: Final answer
   x = 79,247.61