Finding the Fourth Proportional to 457,721, 686,685.34 and 162,233

Step by Step Solution

1. Step 1: Write the proportion equation
   457,721 : 686,685.34 = 162,233 : x
2. Step 2: Convert to fraction form
   457,721/686,685.34 = 162,233/x
3. Step 3: Cross multiply
   457,721x = 686,685.34 × 162,233
4. Step 4: Simplify right side
   457,721x = 111,403,022,764.22
5. Step 5: Solve for x
   x = 111,403,022,764.22/457,721
6. Step 6: Final answer
   x = 243,386.30