Finding the Fourth Proportional to 78.56, 108.52 and 69.38

Step by Step Solution

1. Step 1: Write the proportion equation
   78.56 : 108.52 = 69.38 : x
2. Step 2: Convert to fraction form
   78.56/108.52 = 69.38/x
3. Step 3: Cross multiply
   78.56x = 108.52 × 69.38
4. Step 4: Simplify right side
   78.56x = 7,529.12
5. Step 5: Solve for x
   x = 7,529.12/78.56
6. Step 6: Final answer
   x = 95.84