Finding the Fourth Proportional to 538,229.76, 807,064.38 and 200,993.10

Step by Step Solution

1. Step 1: Write the proportion equation
   538,229.76 : 807,064.38 = 200,993.10 : x
2. Step 2: Convert to fraction form
   538,229.76/807,064.38 = 200,993.10/x
3. Step 3: Cross multiply
   538,229.76x = 807,064.38 × 200,993.10
4. Step 4: Simplify right side
   538,229.76x = 162,214,371,635.78
5. Step 5: Solve for x
   x = 162,214,371,635.78/538,229.76
6. Step 6: Final answer
   x = 301,384.99