Finding the Fourth Proportional to 554,978.16, 765,870.48 and 300,329.37

Step by Step Solution

1. Step 1: Write the proportion equation
   554,978.16 : 765,870.48 = 300,329.37 : x
2. Step 2: Convert to fraction form
   554,978.16/765,870.48 = 300,329.37/x
3. Step 3: Cross multiply
   554,978.16x = 765,870.48 × 300,329.37
4. Step 4: Simplify right side
   554,978.16x = 230,013,398,760.00
5. Step 5: Solve for x
   x = 230,013,398,760.00/554,978.16
6. Step 6: Final answer
   x = 414,454.87