Finding the Fourth Proportional to 78.96, 118.59 and 48.58

Step by Step Solution

1. Step 1: Write the proportion equation
   78.96 : 118.59 = 48.58 : x
2. Step 2: Convert to fraction form
   78.96/118.59 = 48.58/x
3. Step 3: Cross multiply
   78.96x = 118.59 × 48.58
4. Step 4: Simplify right side
   78.96x = 5,761.10
5. Step 5: Solve for x
   x = 5,761.10/78.96
6. Step 6: Final answer
   x = 72.97