Finding the Fourth Proportional to 416,016.38, 624,118.53 and 131,724.20

Step by Step Solution

1. Step 1: Write the proportion equation
   416,016.38 : 624,118.53 = 131,724.20 : x
2. Step 2: Convert to fraction form
   416,016.38/624,118.53 = 131,724.20/x
3. Step 3: Cross multiply
   416,016.38x = 624,118.53 × 131,724.20
4. Step 4: Simplify right side
   416,016.38x = 82,211,516,123.69
5. Step 5: Solve for x
   x = 82,211,516,123.69/416,016.38
6. Step 6: Final answer
   x = 197,616.05