Finding the Fourth Proportional to 115,771.89, 159,760.83 and 65,471.97

Step by Step Solution

1. Step 1: Write the proportion equation
   115,771.89 : 159,760.83 = 65,471.97 : x
2. Step 2: Convert to fraction form
   115,771.89/159,760.83 = 65,471.97/x
3. Step 3: Cross multiply
   115,771.89x = 159,760.83 × 65,471.97
4. Step 4: Simplify right side
   115,771.89x = 10,459,856,268.94
5. Step 5: Solve for x
   x = 10,459,856,268.94/115,771.89
6. Step 6: Final answer
   x = 90,348.84