Finding the Fourth Proportional to 505,046.82, 756,593.34 and 423,019.98

Step by Step Solution

1. Step 1: Write the proportion equation
   505,046.82 : 756,593.34 = 423,019.98 : x
2. Step 2: Convert to fraction form
   505,046.82/756,593.34 = 423,019.98/x
3. Step 3: Cross multiply
   505,046.82x = 756,593.34 × 423,019.98
4. Step 4: Simplify right side
   505,046.82x = 320,054,099,554.93
5. Step 5: Solve for x
   x = 320,054,099,554.93/505,046.82
6. Step 6: Final answer
   x = 633,711.74