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

int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  int tt;
  cin >> tt;
  while (tt--) {
    ll a, b, c, x;
    cin >> a >> b >> c >> x;
    ll L = lcm(a, b);
    L = lcm(L, c);
    ll ans = (L * (--x / L));
    cout << (!ans ? -1 : ans) << '\n';
  }
  return 0;
}