Since Brixton has the same height as Zara which is 64 inches, Zora, who is 8 inches shorter than Brixton, is 64-8 = <<64-8=56>>56 inches tall.
Zara and Brixton's height is 64+64 = <<64+64=128>>128 inches
If you add Zora's height, the three have a total height of 128+56 = <<128+56=184>>184
Itzayana is 4 inches taller than Zoran which means she is 56+4 = 60 inches tall
The total height of the four friends is 60+184 =<<60+184=244>>244
The average height of the three is 244/4 =<<244/4=61>>61
#### 61