Multiple inner joins with multiple tables

Inner joins are probably the best method, and you only need 3.

This will give you a result set with two columns: company and associated values.

SELECT Table4.company, table1.id, table1.value
FROM Table1
    INNER JOIN Table2
        ON Table2.table1_id = Table1.id
    INNER JOIN Table3
        ON Table3.table2_id = Table2.id
    INNER JOIN Table4
        ON Table4.table3_id = Table3.id