Finding the Fourth Proportional to 94.88, 142.83 and 74.72

Step by Step Solution

1. Step 1: Write the proportion equation
   94.88 : 142.83 = 74.72 : x
2. Step 2: Convert to fraction form
   94.88/142.83 = 74.72/x
3. Step 3: Cross multiply
   94.88x = 142.83 × 74.72
4. Step 4: Simplify right side
   94.88x = 10,672.26
5. Step 5: Solve for x
   x = 10,672.26/94.88
6. Step 6: Final answer
   x = 112.48