Finding the Fourth Proportional to 555,086.56, 766,025.72 and 325,647.76

Step by Step Solution

1. Step 1: Write the proportion equation
   555,086.56 : 766,025.72 = 325,647.76 : x
2. Step 2: Convert to fraction form
   555,086.56/766,025.72 = 325,647.76/x
3. Step 3: Cross multiply
   555,086.56x = 766,025.72 × 325,647.76
4. Step 4: Simplify right side
   555,086.56x = 249,454,559,820.39
5. Step 5: Solve for x
   x = 249,454,559,820.39/555,086.56
6. Step 6: Final answer
   x = 449,397.59