Finding the Fourth Proportional to 82.04, 123.18 and 71.48

Step by Step Solution

1. Step 1: Write the proportion equation
   82.04 : 123.18 = 71.48 : x
2. Step 2: Convert to fraction form
   82.04/123.18 = 71.48/x
3. Step 3: Cross multiply
   82.04x = 123.18 × 71.48
4. Step 4: Simplify right side
   82.04x = 8,804.91
5. Step 5: Solve for x
   x = 8,804.91/82.04
6. Step 6: Final answer
   x = 107.32