Finding the Fourth Proportional to 78.51, 108.27 and 69.27

Step by Step Solution

1. Step 1: Write the proportion equation
   78.51 : 108.27 = 69.27 : x
2. Step 2: Convert to fraction form
   78.51/108.27 = 69.27/x
3. Step 3: Cross multiply
   78.51x = 108.27 × 69.27
4. Step 4: Simplify right side
   78.51x = 7,499.86
5. Step 5: Solve for x
   x = 7,499.86/78.51
6. Step 6: Final answer
   x = 95.53