Finding the Fourth Proportional to 78.60, 107.98 and 69.37

Step by Step Solution

1. Step 1: Write the proportion equation
   78.60 : 107.98 = 69.37 : x
2. Step 2: Convert to fraction form
   78.60/107.98 = 69.37/x
3. Step 3: Cross multiply
   78.60x = 107.98 × 69.37
4. Step 4: Simplify right side
   78.60x = 7,490.67
5. Step 5: Solve for x
   x = 7,490.67/78.60
6. Step 6: Final answer
   x = 95.31