/*CODED BY mahmudulsakib2019
  DATE:-06/3/2024;TIME:-07:12 pm
  BANGALDESH , SYLHET*/

#include <iostream>
#include <cmath>     ///mathematics
#include <vector>    ///array
#include <regex>     ///searching_prefix_suffix
#include <algorithm> ///finding_max_min_from_array
#include <string>    ///string_manipulation
#include <numeric>   ///findin total sum of an array
using namespace std;

int main() {
    int T;
    cin >> T;
    for(int i=0;i<T;i++) {
        int a, b, c, X;
        cin >> a >> b >> c >> X;
        int GCM = (a*b)/__gcd(a,b);
        GCM = (GCM*c)/__gcd(GCM,c);
        int count = ((X-1)/GCM)*GCM;
        if(count == 0){
           cout << -1 << endl;
        }
        else{
          cout << count << endl;
        } 
    }
    return 0;
}