If there are four times as many apples as oranges in a certain fruit basket, with the number of apples being 15, there are 15*4=<<15*4=60>>60 oranges in the basket.
If Emiliano eats 2/3 of the oranges in the basket, he would have taken 2/3*60=<<2/3*60=40>>40 oranges from the basket.
With the number of apples in the basket being 15, if Emiliano eats 2/3 of them, 2/3*15=<<15*2/3=10>>10 apples would have been eaten by Emiliano.
The total number of fruits eaten by Emiliano will total 10+40=<<10+40=50>>50
#### 50