Finding the Fourth Proportional to 431,139.89, 594,991.41 and 240,153.37

Step by Step Solution

1. Step 1: Write the proportion equation
   431,139.89 : 594,991.41 = 240,153.37 : x
2. Step 2: Convert to fraction form
   431,139.89/594,991.41 = 240,153.37/x
3. Step 3: Cross multiply
   431,139.89x = 594,991.41 × 240,153.37
4. Step 4: Simplify right side
   431,139.89x = 142,889,189,844.50
5. Step 5: Solve for x
   x = 142,889,189,844.50/431,139.89
6. Step 6: Final answer
   x = 331,421.87