Finding the Fourth Proportional to 216,871.50, 325,081.71 and 83,843.12

Step by Step Solution

1. Step 1: Write the proportion equation
   216,871.50 : 325,081.71 = 83,843.12 : x
2. Step 2: Convert to fraction form
   216,871.50/325,081.71 = 83,843.12/x
3. Step 3: Cross multiply
   216,871.50x = 325,081.71 × 83,843.12
4. Step 4: Simplify right side
   216,871.50x = 27,255,865,634.04
5. Step 5: Solve for x
   x = 27,255,865,634.04/216,871.50
6. Step 6: Final answer
   x = 125,677.49