Finding the Fourth Proportional to 82.72, 123.99 and 60.73

Step by Step Solution

1. Step 1: Write the proportion equation
   82.72 : 123.99 = 60.73 : x
2. Step 2: Convert to fraction form
   82.72/123.99 = 60.73/x
3. Step 3: Cross multiply
   82.72x = 123.99 × 60.73
4. Step 4: Simplify right side
   82.72x = 7,529.37
5. Step 5: Solve for x
   x = 7,529.37/82.72
6. Step 6: Final answer
   x = 91.02