Finding the Fourth Proportional to 144.54, 216.82 and 48.42

Step by Step Solution

1. Step 1: Write the proportion equation
   144.54 : 216.82 = 48.42 : x
2. Step 2: Convert to fraction form
   144.54/216.82 = 48.42/x
3. Step 3: Cross multiply
   144.54x = 216.82 × 48.42
4. Step 4: Simplify right side
   144.54x = 10,498.42
5. Step 5: Solve for x
   x = 10,498.42/144.54
6. Step 6: Final answer
   x = 72.63