Finding the Fourth Proportional to 505,044.82, 756,590.34 and 423,017.98

Step by Step Solution

1. Step 1: Write the proportion equation
   505,044.82 : 756,590.34 = 423,017.98 : x
2. Step 2: Convert to fraction form
   505,044.82/756,590.34 = 423,017.98/x
3. Step 3: Cross multiply
   505,044.82x = 756,590.34 × 423,017.98
4. Step 4: Simplify right side
   505,044.82x = 320,051,317,314.31
5. Step 5: Solve for x
   x = 320,051,317,314.31/505,044.82
6. Step 6: Final answer
   x = 633,708.74