Finding the Fourth Proportional to 555,014.43, 765,919.89 and 300,365.61

Step by Step Solution

1. Step 1: Write the proportion equation
   555,014.43 : 765,919.89 = 300,365.61 : x
2. Step 2: Convert to fraction form
   555,014.43/765,919.89 = 300,365.61/x
3. Step 3: Cross multiply
   555,014.43x = 765,919.89 × 300,365.61
4. Step 4: Simplify right side
   555,014.43x = 230,055,994,970.98
5. Step 5: Solve for x
   x = 230,055,994,970.98/555,014.43
6. Step 6: Final answer
   x = 414,504.53