Finding the Fourth Proportional to 171,317.40, 256,828.42 and 82,633.23

Step by Step Solution

1. Step 1: Write the proportion equation
   171,317.40 : 256,828.42 = 82,633.23 : x
2. Step 2: Convert to fraction form
   171,317.40/256,828.42 = 82,633.23/x
3. Step 3: Cross multiply
   171,317.40x = 256,828.42 × 82,633.23
4. Step 4: Simplify right side
   171,317.40x = 21,222,562,003.69
5. Step 5: Solve for x
   x = 21,222,562,003.69/171,317.40
6. Step 6: Final answer
   x = 123,878.62