Finding the Fourth Proportional to 416,016.57, 624,118.41 and 131,724.12

Step by Step Solution

1. Step 1: Write the proportion equation
   416,016.57 : 624,118.41 = 131,724.12 : x
2. Step 2: Convert to fraction form
   416,016.57/624,118.41 = 131,724.12/x
3. Step 3: Cross multiply
   416,016.57x = 624,118.41 × 131,724.12
4. Step 4: Simplify right side
   416,016.57x = 82,211,448,333.05
5. Step 5: Solve for x
   x = 82,211,448,333.05/416,016.57
6. Step 6: Final answer
   x = 197,615.80