Finding the Fourth Proportional to 331,667.28, 457,711.56 and 188,424.72

Step by Step Solution

1. Step 1: Write the proportion equation
   331,667.28 : 457,711.56 = 188,424.72 : x
2. Step 2: Convert to fraction form
   331,667.28/457,711.56 = 188,424.72/x
3. Step 3: Cross multiply
   331,667.28x = 457,711.56 × 188,424.72
4. Step 4: Simplify right side
   331,667.28x = 86,244,172,533.76
5. Step 5: Solve for x
   x = 86,244,172,533.76/331,667.28
6. Step 6: Final answer
   x = 260,032.20