Finding the Fourth Proportional to 331,554.72, 457,408.56 and 231,011.04

Step by Step Solution

1. Step 1: Write the proportion equation
   331,554.72 : 457,408.56 = 231,011.04 : x
2. Step 2: Convert to fraction form
   331,554.72/457,408.56 = 231,011.04/x
3. Step 3: Cross multiply
   331,554.72x = 457,408.56 × 231,011.04
4. Step 4: Simplify right side
   331,554.72x = 105,666,427,150.50
5. Step 5: Solve for x
   x = 105,666,427,150.50/331,554.72
6. Step 6: Final answer
   x = 318,699.81