Finding the Fourth Proportional to 78.59, 108.27 and 55.25

Step by Step Solution

1. Step 1: Write the proportion equation
   78.59 : 108.27 = 55.25 : x
2. Step 2: Convert to fraction form
   78.59/108.27 = 55.25/x
3. Step 3: Cross multiply
   78.59x = 108.27 × 55.25
4. Step 4: Simplify right side
   78.59x = 5,981.38
5. Step 5: Solve for x
   x = 5,981.38/78.59
6. Step 6: Final answer
   x = 76.11