Finding the Fourth Proportional to 78.18, 117.31 and 32.52

Step by Step Solution

1. Step 1: Write the proportion equation
   78.18 : 117.31 = 32.52 : x
2. Step 2: Convert to fraction form
   78.18/117.31 = 32.52/x
3. Step 3: Cross multiply
   78.18x = 117.31 × 32.52
4. Step 4: Simplify right side
   78.18x = 3,814.92
5. Step 5: Solve for x
   x = 3,814.92/78.18
6. Step 6: Final answer
   x = 48.80