Finding the Fourth Proportional to 127.34, 190.72 and 73.10

Step by Step Solution

1. Step 1: Write the proportion equation
   127.34 : 190.72 = 73.10 : x
2. Step 2: Convert to fraction form
   127.34/190.72 = 73.10/x
3. Step 3: Cross multiply
   127.34x = 190.72 × 73.10
4. Step 4: Simplify right side
   127.34x = 13,941.63
5. Step 5: Solve for x
   x = 13,941.63/127.34
6. Step 6: Final answer
   x = 109.48