Finding the Fourth Proportional to 108,901.56, 150,170.22 and 86,204.28

Step by Step Solution

1. Step 1: Write the proportion equation
   108,901.56 : 150,170.22 = 86,204.28 : x
2. Step 2: Convert to fraction form
   108,901.56/150,170.22 = 86,204.28/x
3. Step 3: Cross multiply
   108,901.56x = 150,170.22 × 86,204.28
4. Step 4: Simplify right side
   108,901.56x = 12,945,315,692.54
5. Step 5: Solve for x
   x = 12,945,315,692.54/108,901.56
6. Step 6: Final answer
   x = 118,871.72