#include <bits/stdc++.h>
using namespace std;

int main() {
  int A,B,C,K;
  cin>>A>>B>>C>>K;
  string Ans="Yes";
  while(B<=A){if(K==0){Ans="No";break;}else{B=B*2;K=K-1;}}
  while(C<=B){if(K==0){Ans="No";break;}else{C=C*2;K=K-1;}}
  cout<<Ans<<endl;
}