Finding the Fourth Proportional to 114.94, 158.52 and 78.10

Step by Step Solution

1. Step 1: Write the proportion equation
   114.94 : 158.52 = 78.10 : x
2. Step 2: Convert to fraction form
   114.94/158.52 = 78.10/x
3. Step 3: Cross multiply
   114.94x = 158.52 × 78.10
4. Step 4: Simplify right side
   114.94x = 12,380.41
5. Step 5: Solve for x
   x = 12,380.41/114.94
6. Step 6: Final answer
   x = 107.71