use strict;
use warnings;

my $data = <<DATA;
1,2,3,4
2,3,4,1
3,4,4,2
4,1,2,3
DATA

my @rows;

open my $inFile, '<', \$data;
while (<$inFile>) {
    chomp;
    push @rows, [split ','];
}
close $inFile;

print join (',', @$_), "\n" for sort mySort @rows;


sub mySort {
    return $a->[1] <=> $b->[1]
        || $a->[3] <=> $b->[3]
        || $a->[2] <=> $b->[2]
        || $a->[0] <=> $b->[0];
}