Finding the Fourth Proportional to 171,017.69, 256,581.86 and 82,259.60

Step by Step Solution

1. Step 1: Write the proportion equation
   171,017.69 : 256,581.86 = 82,259.60 : x
2. Step 2: Convert to fraction form
   171,017.69/256,581.86 = 82,259.60/x
3. Step 3: Cross multiply
   171,017.69x = 256,581.86 × 82,259.60
4. Step 4: Simplify right side
   171,017.69x = 21,106,319,476.65
5. Step 5: Solve for x
   x = 21,106,319,476.65/171,017.69
6. Step 6: Final answer
   x = 123,416.01