To estimate the price of the 2014 BMW X5 xDrive 50i V8 4.4L Twin Power Turbo with 184179 km mileage in good condition, I first looked at the selling prices of similar cars. The most relevant data point is a 2014 BMW X5 V8 4.4L Twin Power Turbo with 184000 km in average condition, sold for 66500 SAR on 2024-08-13. Given that the target car is in good condition, it should be valued slightly higher. Another relevant data point is a 2015 BMW X5 V6 3.0L Twin Power Turbo with 153000 km in average condition, sold for 70000 SAR on 2024-04-20. Considering the target car's higher engine capacity and similar age, it should be valued higher than this. The listed prices of similar cars range from 72500 to 87500 SAR, but these are generally higher than actual selling prices. Therefore, I adjusted the estimate to be slightly lower than the average of these listings but higher than the most relevant selling price.