Finding the Fourth Proportional to 127.39, 190.69 and 69.47

Step by Step Solution

1. Step 1: Write the proportion equation
   127.39 : 190.69 = 69.47 : x
2. Step 2: Convert to fraction form
   127.39/190.69 = 69.47/x
3. Step 3: Cross multiply
   127.39x = 190.69 × 69.47
4. Step 4: Simplify right side
   127.39x = 13,247.23
5. Step 5: Solve for x
   x = 13,247.23/127.39
6. Step 6: Final answer
   x = 103.99