Finding the Fourth Proportional to 82.56, 123.92 and 59.68

Step by Step Solution

1. Step 1: Write the proportion equation
   82.56 : 123.92 = 59.68 : x
2. Step 2: Convert to fraction form
   82.56/123.92 = 59.68/x
3. Step 3: Cross multiply
   82.56x = 123.92 × 59.68
4. Step 4: Simplify right side
   82.56x = 7,395.55
5. Step 5: Solve for x
   x = 7,395.55/82.56
6. Step 6: Final answer
   x = 89.58