Finding the Fourth Proportional to 78.76, 118.12 and 46.62

Step by Step Solution

1. Step 1: Write the proportion equation
   78.76 : 118.12 = 46.62 : x
2. Step 2: Convert to fraction form
   78.76/118.12 = 46.62/x
3. Step 3: Cross multiply
   78.76x = 118.12 × 46.62
4. Step 4: Simplify right side
   78.76x = 5,506.75
5. Step 5: Solve for x
   x = 5,506.75/78.76
6. Step 6: Final answer
   x = 69.92