Finding the Fourth Proportional to 405,945.60, 569,568 and 405,945.60

Step by Step Solution

1. Step 1: Write the proportion equation
   405,945.60 : 569,568 = 405,945.60 : x
2. Step 2: Convert to fraction form
   405,945.60/569,568 = 405,945.60/x
3. Step 3: Cross multiply
   405,945.60x = 569,568 × 405,945.60
4. Step 4: Simplify right side
   405,945.60x = 231,213,623,500.80
5. Step 5: Solve for x
   x = 231,213,623,500.80/405,945.60
6. Step 6: Final answer
   x = 569,568