Finding the Fourth Proportional to 105.72, 146.01 and 94.10

Step by Step Solution

1. Step 1: Write the proportion equation
   105.72 : 146.01 = 94.10 : x
2. Step 2: Convert to fraction form
   105.72/146.01 = 94.10/x
3. Step 3: Cross multiply
   105.72x = 146.01 × 94.10
4. Step 4: Simplify right side
   105.72x = 13,738.81
5. Step 5: Solve for x
   x = 13,738.81/105.72
6. Step 6: Final answer
   x = 129.95