Finding the Fourth Proportional to 127.37, 190.71 and 109.09

Step by Step Solution

1. Step 1: Write the proportion equation
   127.37 : 190.71 = 109.09 : x
2. Step 2: Convert to fraction form
   127.37/190.71 = 109.09/x
3. Step 3: Cross multiply
   127.37x = 190.71 × 109.09
4. Step 4: Simplify right side
   127.37x = 20,804.55
5. Step 5: Solve for x
   x = 20,804.55/127.37
6. Step 6: Final answer
   x = 163.34