Finding the Fourth Proportional to 479,091.72, 661,119.48 and 297,799

Step by Step Solution

1. Step 1: Write the proportion equation
   479,091.72 : 661,119.48 = 297,799 : x
2. Step 2: Convert to fraction form
   479,091.72/661,119.48 = 297,799/x
3. Step 3: Cross multiply
   479,091.72x = 661,119.48 × 297,799
4. Step 4: Simplify right side
   479,091.72x = 196,880,720,024.52
5. Step 5: Solve for x
   x = 196,880,720,024.52/479,091.72
6. Step 6: Final answer
   x = 410,945.78