Finding the Fourth Proportional to 82.53, 123.48 and 60.72

Step by Step Solution

1. Step 1: Write the proportion equation
   82.53 : 123.48 = 60.72 : x
2. Step 2: Convert to fraction form
   82.53/123.48 = 60.72/x
3. Step 3: Cross multiply
   82.53x = 123.48 × 60.72
4. Step 4: Simplify right side
   82.53x = 7,497.71
5. Step 5: Solve for x
   x = 7,497.71/82.53
6. Step 6: Final answer
   x = 90.85