Finding the Fourth Proportional to 78.97, 118.56 and 62.71

Step by Step Solution

1. Step 1: Write the proportion equation
   78.97 : 118.56 = 62.71 : x
2. Step 2: Convert to fraction form
   78.97/118.56 = 62.71/x
3. Step 3: Cross multiply
   78.97x = 118.56 × 62.71
4. Step 4: Simplify right side
   78.97x = 7,434.90
5. Step 5: Solve for x
   x = 7,434.90/78.97
6. Step 6: Final answer
   x = 94.15