Finding the Fourth Proportional to 127.05, 190.56 and 53.98

Step by Step Solution

1. Step 1: Write the proportion equation
   127.05 : 190.56 = 53.98 : x
2. Step 2: Convert to fraction form
   127.05/190.56 = 53.98/x
3. Step 3: Cross multiply
   127.05x = 190.56 × 53.98
4. Step 4: Simplify right side
   127.05x = 10,286.45
5. Step 5: Solve for x
   x = 10,286.45/127.05
6. Step 6: Final answer
   x = 80.96