Care Needed For 89-Year-Old

My grandfather (age 89) is handicapped due to several falls and unable to walk or do basic tasks on his own. My grandmother (age 89) tries to help but is having a hard time due to her age and her own physical health issues. My dad (age 67) also helps out, but their needs are too much for him to handle. Help needed would include bathing, changing, and the use of a lift system to move him from bed to wheelchair and vice versa, and some household help with cleaning would also be beneficial.