Finding the Fourth Proportional to 127.34, 190.71 and 72.36

Step by Step Solution

1. Step 1: Write the proportion equation
   127.34 : 190.71 = 72.36 : x
2. Step 2: Convert to fraction form
   127.34/190.71 = 72.36/x
3. Step 3: Cross multiply
   127.34x = 190.71 × 72.36
4. Step 4: Simplify right side
   127.34x = 13,799.50
5. Step 5: Solve for x
   x = 13,799.50/127.34
6. Step 6: Final answer
   x = 108.37