Finding the Fourth Proportional to 171,110.18, 256,451.42 and 82,339.86

Step by Step Solution

1. Step 1: Write the proportion equation
   171,110.18 : 256,451.42 = 82,339.86 : x
2. Step 2: Convert to fraction form
   171,110.18/256,451.42 = 82,339.86/x
3. Step 3: Cross multiply
   171,110.18x = 256,451.42 × 82,339.86
4. Step 4: Simplify right side
   171,110.18x = 21,116,174,019.60
5. Step 5: Solve for x
   x = 21,116,174,019.60/171,110.18
6. Step 6: Final answer
   x = 123,406.88