Finding the Fourth Proportional to 78.82, 108.70 and 69.62

Step by Step Solution

1. Step 1: Write the proportion equation
   78.82 : 108.70 = 69.62 : x
2. Step 2: Convert to fraction form
   78.82/108.70 = 69.62/x
3. Step 3: Cross multiply
   78.82x = 108.70 × 69.62
4. Step 4: Simplify right side
   78.82x = 7,567.69
5. Step 5: Solve for x
   x = 7,567.69/78.82
6. Step 6: Final answer
   x = 96.01