Finding the Fourth Proportional to 127.42, 190.98 and 73.30

Step by Step Solution

1. Step 1: Write the proportion equation
   127.42 : 190.98 = 73.30 : x
2. Step 2: Convert to fraction form
   127.42/190.98 = 73.30/x
3. Step 3: Cross multiply
   127.42x = 190.98 × 73.30
4. Step 4: Simplify right side
   127.42x = 13,998.83
5. Step 5: Solve for x
   x = 13,998.83/127.42
6. Step 6: Final answer
   x = 109.86