Finding the Fourth Proportional to 573,556.70, 860,449.89 and 321,196.07

Step by Step Solution

1. Step 1: Write the proportion equation
   573,556.70 : 860,449.89 = 321,196.07 : x
2. Step 2: Convert to fraction form
   573,556.70/860,449.89 = 321,196.07/x
3. Step 3: Cross multiply
   573,556.70x = 860,449.89 × 321,196.07
4. Step 4: Simplify right side
   573,556.70x = 276,373,123,099.93
5. Step 5: Solve for x
   x = 276,373,123,099.93/573,556.70
6. Step 6: Final answer
   x = 481,858.42