Finding the Fourth Proportional to 456,865.98, 629,066.83 and 405,789.96

Step by Step Solution

1. Step 1: Write the proportion equation
   456,865.98 : 629,066.83 = 405,789.96 : x
2. Step 2: Convert to fraction form
   456,865.98/629,066.83 = 405,789.96/x
3. Step 3: Cross multiply
   456,865.98x = 629,066.83 × 405,789.96
4. Step 4: Simplify right side
   456,865.98x = 255,269,003,783.03
5. Step 5: Solve for x
   x = 255,269,003,783.03/456,865.98
6. Step 6: Final answer
   x = 558,739.36