Jayden has 5 + 6 = <<5+6=11>>11 lemons.
Eli has 11 x 3 = <<11*3=33>>33 lemons.
Ian has 33 x 2 = <<33*2=66>>66 lemons.
Thus, the 4 of them have a total of 5 + 11 + 33 + 66 = <<5+11+33+66=115>>115 lemons.
#### 115