Finding the Fourth Proportional to 127.42, 191.25 and 55.33

Step by Step Solution

1. Step 1: Write the proportion equation
   127.42 : 191.25 = 55.33 : x
2. Step 2: Convert to fraction form
   127.42/191.25 = 55.33/x
3. Step 3: Cross multiply
   127.42x = 191.25 × 55.33
4. Step 4: Simplify right side
   127.42x = 10,581.86
5. Step 5: Solve for x
   x = 10,581.86/127.42
6. Step 6: Final answer
   x = 83.05