Finding the Fourth Proportional to 555,049.91, 765,968.89 and 300,401.10

Step by Step Solution

1. Step 1: Write the proportion equation
   555,049.91 : 765,968.89 = 300,401.10 : x
2. Step 2: Convert to fraction form
   555,049.91/765,968.89 = 300,401.10/x
3. Step 3: Cross multiply
   555,049.91x = 765,968.89 × 300,401.10
4. Step 4: Simplify right side
   555,049.91x = 230,097,897,121.78
5. Step 5: Solve for x
   x = 230,097,897,121.78/555,049.91
6. Step 6: Final answer
   x = 414,553.53