a, b,c = gets.chomp.split(" ").map(&:to_i)
k = gets.chomp.to_i
cost = 0
until b > a
    b = b * 2
    cost += 1
end
until c > b
    c = c * 2
    cost += 1
end
if cost > k
    puts "No"
else
    puts "Yes"
end