Finding the Fourth Proportional to 561,003.72, 774,251.59 and 315,996.54

Step by Step Solution

1. Step 1: Write the proportion equation
   561,003.72 : 774,251.59 = 315,996.54 : x
2. Step 2: Convert to fraction form
   561,003.72/774,251.59 = 315,996.54/x
3. Step 3: Cross multiply
   561,003.72x = 774,251.59 × 315,996.54
4. Step 4: Simplify right side
   561,003.72x = 244,660,823,529.50
5. Step 5: Solve for x
   x = 244,660,823,529.50/561,003.72
6. Step 6: Final answer
   x = 436,112.66