#include<bits/stdc++.h>
using namespace std;
int main()
{
  int A,B,C;
  cin>>A>>B>>C;
  int K;
  cin>>K;
  while(B<=A)
  {
    B+=B;
    K--;
  }
  while(C<=B)
  {
    C+=C;
    K--;
  }
  if(K>=0)
    puts("Yes");
  else	puts("No");
  return 0;
}