Finding the Fourth Proportional to 557,100.72, 768,802.20 and 327,667.71

Step by Step Solution

1. Step 1: Write the proportion equation
   557,100.72 : 768,802.20 = 327,667.71 : x
2. Step 2: Convert to fraction form
   557,100.72/768,802.20 = 327,667.71/x
3. Step 3: Cross multiply
   557,100.72x = 768,802.20 × 327,667.71
4. Step 4: Simplify right side
   557,100.72x = 251,911,656,316.96
5. Step 5: Solve for x
   x = 251,911,656,316.96/557,100.72
6. Step 6: Final answer
   x = 452,183.33