For the function $f(x)=3x^5-4x^4+3x^3+5x^2+6,$ find $f^{\text{'}\text{'}\text{'}}(x),$ the third derivative of $f,$ and $f^{(4)}(x),$ the fourth derivative of $f$

$f^{\text{'}\text{'}\text{'}}(x)=$

$f^{(4)}(x)$