Okay, it is ugly, but it works:
#!/usr/bin/perl
use strict;
use warnings;
my %result;
while(<DATA>) {
m#(\d{2})/(\d{2})/(\d{4})#;
$result{$3. $2. $1} = $_;
};
my $highest = $result{(sort keys %result)[-1]};
print $highest, "\n";
exit;
__DATA__
Record 0: Coll 02/14/2003 Charles S. 2862.30 00000 ISSUE WWW
Record 1: Coll 03/17/2003 Peter C. 392.50 00000 ISSUE WWW
Record 2: Coll 07/25/2003 John K. 10.00 00000 ISSUE CCC
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