thanks AngelaS

after a bit of browsing in MOB, i found the machine i was looking for.

But there is another way to find the inventory path of the machines.

1. Login to VSphere Client,

2. go to Home

3. go to VMs and Templates

4. browse folder and find the virtual machine,

5. the inventory path would be DataCenter/vm/folder structure inside DataCenter e.g. if the path in the inventory is DataCenter/folder1/folder2/machine, then it the inventory path would be DataCenter/vm/folder1/folder2/machine