Finding the Fourth Proportional to 82.73, 114.24 and 72.48

Step by Step Solution

1. Step 1: Write the proportion equation
   82.73 : 114.24 = 72.48 : x
2. Step 2: Convert to fraction form
   82.73/114.24 = 72.48/x
3. Step 3: Cross multiply
   82.73x = 114.24 × 72.48
4. Step 4: Simplify right side
   82.73x = 8,280.12
5. Step 5: Solve for x
   x = 8,280.12/82.73
6. Step 6: Final answer
   x = 100.09