Finding the Fourth Proportional to 78.86, 118.27 and 32.56

Step by Step Solution

1. Step 1: Write the proportion equation
   78.86 : 118.27 = 32.56 : x
2. Step 2: Convert to fraction form
   78.86/118.27 = 32.56/x
3. Step 3: Cross multiply
   78.86x = 118.27 × 32.56
4. Step 4: Simplify right side
   78.86x = 3,850.62
5. Step 5: Solve for x
   x = 3,850.62/78.86
6. Step 6: Final answer
   x = 48.83