Finding the Fourth Proportional to 307,940.82, 424,945.89 and 171,972.60

Step by Step Solution

1. Step 1: Write the proportion equation
   307,940.82 : 424,945.89 = 171,972.60 : x
2. Step 2: Convert to fraction form
   307,940.82/424,945.89 = 171,972.60/x
3. Step 3: Cross multiply
   307,940.82x = 424,945.89 × 171,972.60
4. Step 4: Simplify right side
   307,940.82x = 73,079,049,562.61
5. Step 5: Solve for x
   x = 73,079,049,562.61/307,940.82
6. Step 6: Final answer
   x = 237,315.24