Finding the Fourth Proportional to 95.60, 131.82 and 78.18

Step by Step Solution

1. Step 1: Write the proportion equation
   95.60 : 131.82 = 78.18 : x
2. Step 2: Convert to fraction form
   95.60/131.82 = 78.18/x
3. Step 3: Cross multiply
   95.60x = 131.82 × 78.18
4. Step 4: Simplify right side
   95.60x = 10,305.69
5. Step 5: Solve for x
   x = 10,305.69/95.60
6. Step 6: Final answer
   x = 107.81