Finding the Fourth Proportional to 82.72, 114.15 and 48.22

Step by Step Solution

1. Step 1: Write the proportion equation
   82.72 : 114.15 = 48.22 : x
2. Step 2: Convert to fraction form
   82.72/114.15 = 48.22/x
3. Step 3: Cross multiply
   82.72x = 114.15 × 48.22
4. Step 4: Simplify right side
   82.72x = 5,504.31
5. Step 5: Solve for x
   x = 5,504.31/82.72
6. Step 6: Final answer
   x = 66.54