Ain't impossible because we are growing now. The volume of user is getting big and the holder keeps holding as much as they can so the price really increasing so 100.000 is possible to attain now. Bitcoin will grow more in the future. Think now how many people hold bitcoin now and if it become a necessity and everyone needs to have bitcoin to buy/sell then you can see how high price will go. Keep in mind that Bitcoins are limited to 21 Million only.
Since you stated that the supply of bitcoin is only limited to 21 million, it may be possible in the near future by following the law of demand and supply. Bitcoin is also continuously rising through time and the number of investors are increasing per day. Not to mention, after China's banning of ICOs, its price is steadily regaining which is a good sign in the near future.
Be reminded that in order for its price to skyrocket like what happened 2-3 years ago, we must consider the external factors that affect the price increase of bitcoins. One primary factor is the prioritization of each country with regards to the maximization of bitcoin. The more countries that accept it as a medium of payment, more investors and individuals would be inclined to pay with it, thus increasing its price.