Finding the Fourth Proportional to 82,878.59, 114,413.31 and 57,404.30

Step by Step Solution

1. Step 1: Write the proportion equation
   82,878.59 : 114,413.31 = 57,404.30 : x
2. Step 2: Convert to fraction form
   82,878.59/114,413.31 = 57,404.30/x
3. Step 3: Cross multiply
   82,878.59x = 114,413.31 × 57,404.30
4. Step 4: Simplify right side
   82,878.59x = 6,567,815,399.17
5. Step 5: Solve for x
   x = 6,567,815,399.17/82,878.59
6. Step 6: Final answer
   x = 79,246.22