Finding the Fourth Proportional to 78.83, 118.22 and 48.42

Step by Step Solution

1. Step 1: Write the proportion equation
   78.83 : 118.22 = 48.42 : x
2. Step 2: Convert to fraction form
   78.83/118.22 = 48.42/x
3. Step 3: Cross multiply
   78.83x = 118.22 × 48.42
4. Step 4: Simplify right side
   78.83x = 5,723.97
5. Step 5: Solve for x
   x = 5,723.97/78.83
6. Step 6: Final answer
   x = 72.62