Finding the Fourth Proportional to 95.34, 131.34 and 78.91

Step by Step Solution

1. Step 1: Write the proportion equation
   95.34 : 131.34 = 78.91 : x
2. Step 2: Convert to fraction form
   95.34/131.34 = 78.91/x
3. Step 3: Cross multiply
   95.34x = 131.34 × 78.91
4. Step 4: Simplify right side
   95.34x = 10,364.04
5. Step 5: Solve for x
   x = 10,364.04/95.34
6. Step 6: Final answer
   x = 108.71