Finding the Fourth Proportional to 78.86, 108.79 and 46.10

Step by Step Solution

1. Step 1: Write the proportion equation
   78.86 : 108.79 = 46.10 : x
2. Step 2: Convert to fraction form
   78.86/108.79 = 46.10/x
3. Step 3: Cross multiply
   78.86x = 108.79 × 46.10
4. Step 4: Simplify right side
   78.86x = 5,014.79
5. Step 5: Solve for x
   x = 5,014.79/78.86
6. Step 6: Final answer
   x = 63.59