Finding the Fourth Proportional to 92.94, 139.42 and 28.81

Step by Step Solution

1. Step 1: Write the proportion equation
   92.94 : 139.42 = 28.81 : x
2. Step 2: Convert to fraction form
   92.94/139.42 = 28.81/x
3. Step 3: Cross multiply
   92.94x = 139.42 × 28.81
4. Step 4: Simplify right side
   92.94x = 4,016.69
5. Step 5: Solve for x
   x = 4,016.69/92.94
6. Step 6: Final answer
   x = 43.22