Extracting multiple matrix from a single matrix

2018 9 8
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I have a matrix(type double) similar to the following example:
X = [ 23 3 5 1;
21 45 8 1;
65 56 7 1;
71 42 4 2;
45 91 5 2;
34 6 1 3;
87 37 8 3;
23 3 5 3]
Based on the element of the fourth column I want to get 3 matrix from the above matrix like the following example;
A=[ 23 3 5 1;
21 45 8 1;
65 56 7 1; ]
B =[ 71 42 4 2;
45 91 5 2; ]
C =[ 34 6 1 3;
87 37 8 3;
23 3 5 3;]
Basically I want to seprate all the 1s,2s and 3s of the fourth column into another matrix. How can I do it in the Matlab!

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