Finding the Fourth Proportional to 114.77, 158.42 and 78.04

Step by Step Solution

1. Step 1: Write the proportion equation
   114.77 : 158.42 = 78.04 : x
2. Step 2: Convert to fraction form
   114.77/158.42 = 78.04/x
3. Step 3: Cross multiply
   114.77x = 158.42 × 78.04
4. Step 4: Simplify right side
   114.77x = 12,363.10
5. Step 5: Solve for x
   x = 12,363.10/114.77
6. Step 6: Final answer
   x = 107.72