Finding the Fourth Proportional to 82.73, 123.95 and 72.47

Step by Step Solution

1. Step 1: Write the proportion equation
   82.73 : 123.95 = 72.47 : x
2. Step 2: Convert to fraction form
   82.73/123.95 = 72.47/x
3. Step 3: Cross multiply
   82.73x = 123.95 × 72.47
4. Step 4: Simplify right side
   82.73x = 8,982.22
5. Step 5: Solve for x
   x = 8,982.22/82.73
6. Step 6: Final answer
   x = 108.58