function Main(input) {
  input = input.replace(/\n/g, ' ');
  input = input.split(" ");
  var A = Number(input[0]);
  var B = Number(input[1]);
  var C = Number(input[2]);
  var D = Number(input[3]);
  var ans = 0;
  var i=0;
  var l=0;
  while(true){
    if(A<B){
      ans+=i;
      break;
    }
    B*=2;
    i++;
  }
  while(true){
    if(B<C){
      ans+=l;
      break;
    }
    C*=2;
    l++;
  }
  if(D>=ans){
    console.log("Yes");
  }else{
    console.log("No");
  }
}
Main(require("fs").readFileSync("/dev/stdin", "utf8"));