Finding the Fourth Proportional to 78.76, 118.21 and 59.52

Step by Step Solution

1. Step 1: Write the proportion equation
   78.76 : 118.21 = 59.52 : x
2. Step 2: Convert to fraction form
   78.76/118.21 = 59.52/x
3. Step 3: Cross multiply
   78.76x = 118.21 × 59.52
4. Step 4: Simplify right side
   78.76x = 7,035.86
5. Step 5: Solve for x
   x = 7,035.86/78.76
6. Step 6: Final answer
   x = 89.33