Finding the Fourth Proportional to 405,282.86, 559,311.59 and 233,227.05

Step by Step Solution

1. Step 1: Write the proportion equation
   405,282.86 : 559,311.59 = 233,227.05 : x
2. Step 2: Convert to fraction form
   405,282.86/559,311.59 = 233,227.05/x
3. Step 3: Cross multiply
   405,282.86x = 559,311.59 × 233,227.05
4. Step 4: Simplify right side
   405,282.86x = 130,446,591,000.37
5. Step 5: Solve for x
   x = 130,446,591,000.37/405,282.86
6. Step 6: Final answer
   x = 321,865.55