Finding the Fourth Proportional to 555,053.54, 765,973.89 and 300,404.73

Step by Step Solution

1. Step 1: Write the proportion equation
   555,053.54 : 765,973.89 = 300,404.73 : x
2. Step 2: Convert to fraction form
   555,053.54/765,973.89 = 300,404.73/x
3. Step 3: Cross multiply
   555,053.54x = 765,973.89 × 300,404.73
4. Step 4: Simplify right side
   555,053.54x = 230,102,179,612.50
5. Step 5: Solve for x
   x = 230,102,179,612.50/555,053.54
6. Step 6: Final answer
   x = 414,558.53