Finding the Fourth Proportional to 78.91, 108.88 and 46.15

Step by Step Solution

1. Step 1: Write the proportion equation
   78.91 : 108.88 = 46.15 : x
2. Step 2: Convert to fraction form
   78.91/108.88 = 46.15/x
3. Step 3: Cross multiply
   78.91x = 108.88 × 46.15
4. Step 4: Simplify right side
   78.91x = 5,024.42
5. Step 5: Solve for x
   x = 5,024.42/78.91
6. Step 6: Final answer
   x = 63.67