Finding the Fourth Proportional to 128.72, 193.14 and 94.52

Step by Step Solution

1. Step 1: Write the proportion equation
   128.72 : 193.14 = 94.52 : x
2. Step 2: Convert to fraction form
   128.72/193.14 = 94.52/x
3. Step 3: Cross multiply
   128.72x = 193.14 × 94.52
4. Step 4: Simplify right side
   128.72x = 18,255.59
5. Step 5: Solve for x
   x = 18,255.59/128.72
6. Step 6: Final answer
   x = 141.82