Finding the Fourth Proportional to 218,930.72, 302,086.56 and 127,016.72

Step by Step Solution

1. Step 1: Write the proportion equation
   218,930.72 : 302,086.56 = 127,016.72 : x
2. Step 2: Convert to fraction form
   218,930.72/302,086.56 = 127,016.72/x
3. Step 3: Cross multiply
   218,930.72x = 302,086.56 × 127,016.72
4. Step 4: Simplify right side
   218,930.72x = 38,370,044,007.28
5. Step 5: Solve for x
   x = 38,370,044,007.28/218,930.72
6. Step 6: Final answer
   x = 175,261.12