Lloyds has lost my US dollar cheque, jeopardising a property purchase

I wanted to use the inheritance money towards a shop but now the seller may withdrawI have been trying to cash a US cheque for just over $100,000 (£77,300), left to me in America by my late father but Lloyds bank has lost it, and now I fear a shop I was hoping to buy with this money will also be lost. Lloyds was to open a dollar account for me, and we agreed I would go to my local branch with ID and pay in the cheque at the same time. I did this in late February and, luckily, asked fo