#include<bits/stdc++.h>
using namespace std;
int main()
{
	int a,b,c;
	cin>>a>>b>>c;
	int k;
	cin>>k;
	while(a>=b)
	{
		b*=2;
		k--;
	}
	while(b>=c)
	{
		c*=2;
		k--;
	}
	if(k<0)
	cout<<"No";
	else
	cout<<"Yes";
}