Finding the Fourth Proportional to 95.34, 131.55 and 78.06

Step by Step Solution

1. Step 1: Write the proportion equation
   95.34 : 131.55 = 78.06 : x
2. Step 2: Convert to fraction form
   95.34/131.55 = 78.06/x
3. Step 3: Cross multiply
   95.34x = 131.55 × 78.06
4. Step 4: Simplify right side
   95.34x = 10,268.79
5. Step 5: Solve for x
   x = 10,268.79/95.34
6. Step 6: Final answer
   x = 107.71