Finding the Fourth Proportional to 78.81, 118.18 and 24.69

Step by Step Solution

1. Step 1: Write the proportion equation
   78.81 : 118.18 = 24.69 : x
2. Step 2: Convert to fraction form
   78.81/118.18 = 24.69/x
3. Step 3: Cross multiply
   78.81x = 118.18 × 24.69
4. Step 4: Simplify right side
   78.81x = 2,917.86
5. Step 5: Solve for x
   x = 2,917.86/78.81
6. Step 6: Final answer
   x = 37.02