Finding the Fourth Proportional to 81,866.88, 122,684.88 and 65,152.56

Step by Step Solution

1. Step 1: Write the proportion equation
   81,866.88 : 122,684.88 = 65,152.56 : x
2. Step 2: Convert to fraction form
   81,866.88/122,684.88 = 65,152.56/x
3. Step 3: Cross multiply
   81,866.88x = 122,684.88 × 65,152.56
4. Step 4: Simplify right side
   81,866.88x = 7,993,234,005.29
5. Step 5: Solve for x
   x = 7,993,234,005.29/81,866.88
6. Step 6: Final answer
   x = 97,636.97