Finding the Fourth Proportional to 270,756.72, 406,507.78 and 137,727

Step by Step Solution

1. Step 1: Write the proportion equation
   270,756.72 : 406,507.78 = 137,727 : x
2. Step 2: Convert to fraction form
   270,756.72/406,507.78 = 137,727/x
3. Step 3: Cross multiply
   270,756.72x = 406,507.78 × 137,727
4. Step 4: Simplify right side
   270,756.72x = 55,987,097,016.06
5. Step 5: Solve for x
   x = 55,987,097,016.06/270,756.72
6. Step 6: Final answer
   x = 206,780.08