Finding the Fourth Proportional to 501,846.84, 692,379.98 and 320,664.84

Step by Step Solution

1. Step 1: Write the proportion equation
   501,846.84 : 692,379.98 = 320,664.84 : x
2. Step 2: Convert to fraction form
   501,846.84/692,379.98 = 320,664.84/x
3. Step 3: Cross multiply
   501,846.84x = 692,379.98 × 320,664.84
4. Step 4: Simplify right side
   501,846.84x = 222,021,915,505.90
5. Step 5: Solve for x
   x = 222,021,915,505.90/501,846.84
6. Step 6: Final answer
   x = 442,409.71