my @temps =  ('69', '70', '71');
my @numbers = ('0.115', '3.667', '4.78');
my $highNumberIndex = 0;

for (my $i = 0; $i < @number; $i++)
{
  if ($numbers[$highNumberIndex] < $numbers[$i])
  {
    $highNumberIndex = $i;
  }
}
print $temps[$highNumberIndex];