Finding the Fourth Proportional to 94.56, 141.72 and 71.28

Step by Step Solution

1. Step 1: Write the proportion equation
   94.56 : 141.72 = 71.28 : x
2. Step 2: Convert to fraction form
   94.56/141.72 = 71.28/x
3. Step 3: Cross multiply
   94.56x = 141.72 × 71.28
4. Step 4: Simplify right side
   94.56x = 10,101.80
5. Step 5: Solve for x
   x = 10,101.80/94.56
6. Step 6: Final answer
   x = 106.83