Resposta:

[tex]\boxed{\large\rm{a_{41}=213}}[/tex]

Explicação passo-a-passo:

[tex]\large\rm{a_n=a_1+(n-1)\cdot r}[/tex]

[tex]\large\rm{a_{41}=53+(41-1)\cdot 4}[/tex]

[tex]\large\rm{a_{41}=53+40\cdot 4}[/tex]

[tex]\large\rm{a_{41}=53+160}[/tex]

[tex]\boxed{\large\rm{a_{41}=213}}[/tex]

Bons estudos!!!