Finding the Fourth Proportional to 462,942.72, 639,004.32 and 269,408.16

Step by Step Solution

1. Step 1: Write the proportion equation
   462,942.72 : 639,004.32 = 269,408.16 : x
2. Step 2: Convert to fraction form
   462,942.72/639,004.32 = 269,408.16/x
3. Step 3: Cross multiply
   462,942.72x = 639,004.32 × 269,408.16
4. Step 4: Simplify right side
   462,942.72x = 172,152,978,083.25
5. Step 5: Solve for x
   x = 172,152,978,083.25/462,942.72
6. Step 6: Final answer
   x = 371,866.69