Finding the Fourth Proportional to 516,309.98, 774,164.25 and 200,397.83

Step by Step Solution

1. Step 1: Write the proportion equation
   516,309.98 : 774,164.25 = 200,397.83 : x
2. Step 2: Convert to fraction form
   516,309.98/774,164.25 = 200,397.83/x
3. Step 3: Cross multiply
   516,309.98x = 774,164.25 × 200,397.83
4. Step 4: Simplify right side
   516,309.98x = 155,140,831,892.76
5. Step 5: Solve for x
   x = 155,140,831,892.76/516,309.98
6. Step 6: Final answer
   x = 300,480.02