Finding the Fourth Proportional to 554,969.56, 765,859.98 and 300,320.68

Step by Step Solution

1. Step 1: Write the proportion equation
   554,969.56 : 765,859.98 = 300,320.68 : x
2. Step 2: Convert to fraction form
   554,969.56/765,859.98 = 300,320.68/x
3. Step 3: Cross multiply
   554,969.56x = 765,859.98 × 300,320.68
4. Step 4: Simplify right side
   554,969.56x = 230,003,589,978.39
5. Step 5: Solve for x
   x = 230,003,589,978.39/554,969.56
6. Step 6: Final answer
   x = 414,443.61