Finding the Fourth Proportional to 171,111.18, 256,452.92 and 82,340.86

Step by Step Solution

1. Step 1: Write the proportion equation
   171,111.18 : 256,452.92 = 82,340.86 : x
2. Step 2: Convert to fraction form
   171,111.18/256,452.92 = 82,340.86/x
3. Step 3: Cross multiply
   171,111.18x = 256,452.92 × 82,340.86
4. Step 4: Simplify right side
   171,111.18x = 21,116,553,982.31
5. Step 5: Solve for x
   x = 21,116,553,982.31/171,111.18
6. Step 6: Final answer
   x = 123,408.38