Finding the Fourth Proportional to 307,936.69, 424,948.15 and 171,969.20

Step by Step Solution

1. Step 1: Write the proportion equation
   307,936.69 : 424,948.15 = 171,969.20 : x
2. Step 2: Convert to fraction form
   307,936.69/424,948.15 = 171,969.20/x
3. Step 3: Cross multiply
   307,936.69x = 424,948.15 × 171,969.20
4. Step 4: Simplify right side
   307,936.69x = 73,077,993,396.98
5. Step 5: Solve for x
   x = 73,077,993,396.98/307,936.69
6. Step 6: Final answer
   x = 237,314.99