Finding the Fourth Proportional to 563,074.56, 776,826.72 and 321,370.56

Step by Step Solution

1. Step 1: Write the proportion equation
   563,074.56 : 776,826.72 = 321,370.56 : x
2. Step 2: Convert to fraction form
   563,074.56/776,826.72 = 321,370.56/x
3. Step 3: Cross multiply
   563,074.56x = 776,826.72 × 321,370.56
4. Step 4: Simplify right side
   563,074.56x = 249,649,238,029.36
5. Step 5: Solve for x
   x = 249,649,238,029.36/563,074.56
6. Step 6: Final answer
   x = 443,367.99