user: Question: What is the per capita income of the county with a median family income of $40,492?
Columns: ['County', 'Per capita income', 'Median household income', 'Median family income', 'Population', 'Number of households']
Types: ['text', 'text', 'text', 'text', 'real', 'real']
Sample row: ['Beaufort', '$32,731', '$55,286', '$65,071', 162233.0, 64945.0]
SQL:

assistant: SELECT "Per capita income" FROM "Table" WHERE "Median family income" = '$40,492';