a,b,c = gets.chomp.split(' ').map(&:to_i)
k = gets.chomp.to_i

k.times do
  if (b < a)
    b = b*2
    next
  end
  if (c < b)
    c = c*2
    next
  end
  if (a < b && b < c)
    puts 'Yes'
    exit
  end
end

puts (a < b && b < c) ? 'Yes' : 'No'