Finding the Fourth Proportional to 410,166.83, 614,364.50 and 400,128.50

Step by Step Solution

1. Step 1: Write the proportion equation
   410,166.83 : 614,364.50 = 400,128.50 : x
2. Step 2: Convert to fraction form
   410,166.83/614,364.50 = 400,128.50/x
3. Step 3: Cross multiply
   410,166.83x = 614,364.50 × 400,128.50
4. Step 4: Simplify right side
   410,166.83x = 245,824,745,838.25
5. Step 5: Solve for x
   x = 245,824,745,838.25/410,166.83
6. Step 6: Final answer
   x = 599,328.68