\[\boxed{\mathbf{29}\mathbf{.}}\]
\[1)\ \sqrt[3]{10^{6}} = \sqrt[3]{10^{3 \bullet 2}} = 10^{2} = 100\]
\[2)\ \sqrt[3]{3^{12}} = \sqrt[3]{3^{3 \bullet 4}} = 3^{4} = 81\]
\[3)\ \sqrt[4]{\left( \frac{1}{2} \right)^{12}} = \sqrt[4]{\left( \frac{1}{2} \right)^{4 \bullet 3}} =\]
\[= \left( \frac{1}{2} \right)^{3} = \frac{1}{8}\]
\[4)\ \sqrt[4]{\left( \frac{1}{3} \right)^{16}} = \sqrt[4]{\left( \frac{1}{3} \right)^{4 \bullet 4}} =\]
\[= \left( \frac{1}{3} \right)^{4} = \frac{1}{81}\]