Finding the Fourth Proportional to 82.32, 123.53 and 48.09

Step by Step Solution

1. Step 1: Write the proportion equation
   82.32 : 123.53 = 48.09 : x
2. Step 2: Convert to fraction form
   82.32/123.53 = 48.09/x
3. Step 3: Cross multiply
   82.32x = 123.53 × 48.09
4. Step 4: Simplify right side
   82.32x = 5,940.78
5. Step 5: Solve for x
   x = 5,940.78/82.32
6. Step 6: Final answer
   x = 72.17