Finding the Fourth Proportional to 82,396.86, 123,256.88 and 65,789.36

Step by Step Solution

1. Step 1: Write the proportion equation
   82,396.86 : 123,256.88 = 65,789.36 : x
2. Step 2: Convert to fraction form
   82,396.86/123,256.88 = 65,789.36/x
3. Step 3: Cross multiply
   82,396.86x = 123,256.88 × 65,789.36
4. Step 4: Simplify right side
   82,396.86x = 8,108,991,250.80
5. Step 5: Solve for x
   x = 8,108,991,250.80/82,396.86
6. Step 6: Final answer
   x = 98,413.84