Finding the Fourth Proportional to 485,058.56, 727,582.72 and 189,568

Step by Step Solution

1. Step 1: Write the proportion equation
   485,058.56 : 727,582.72 = 189,568 : x
2. Step 2: Convert to fraction form
   485,058.56/727,582.72 = 189,568/x
3. Step 3: Cross multiply
   485,058.56x = 727,582.72 × 189,568
4. Step 4: Simplify right side
   485,058.56x = 137,926,401,064.96
5. Step 5: Solve for x
   x = 137,926,401,064.96/485,058.56
6. Step 6: Final answer
   x = 284,350.00