Finding the Fourth Proportional to 269,255.28, 403,688.52 and 82,164.72

Step by Step Solution

1. Step 1: Write the proportion equation
   269,255.28 : 403,688.52 = 82,164.72 : x
2. Step 2: Convert to fraction form
   269,255.28/403,688.52 = 82,164.72/x
3. Step 3: Cross multiply
   269,255.28x = 403,688.52 × 82,164.72
4. Step 4: Simplify right side
   269,255.28x = 33,168,954,213.01
5. Step 5: Solve for x
   x = 33,168,954,213.01/269,255.28
6. Step 6: Final answer
   x = 123,187.76