To estimate the price of the 2014 Lincoln Navigator V8 5.4L 4WD Presidential (Top) with 120646 km mileage, I considered the listed prices of similar cars. The closest match is the 2014 Lincoln Navigator 5.4L V8 Standard with 166000 km listed for AED 50000. Given that the Presidential (Top) variant is higher in trim and has lower mileage, it should be priced higher. The 2015 Lincoln Navigator 3.5L TC V6 Presidential (Top) with 100000 km is listed for AED 69500, and the 2016 models range from AED 69500 to AED 118000 depending on mileage and variant. Considering the age, mileage, and trim of the target car, I adjusted the price accordingly.