Viscosities, diffusion coefficients, thermal conductivities and thermal diffusion factors for seven binary gaseous mixtures H-2-CO2, H-2-N-2, H-2-CH4, H-2-C2H6, N-2-CH4, N-2-C2H6, CH4-C2H6, one ternary gaseous mixture N-2-CH4-C2H6 and one quaternary gaseous mixture H-2-N-2-CH4-C2H6 were determined based on the principle of the corresponding states of viscosity together with the inversion technique. The calculated transport properties have been compared with those obtained from other methods and also from experimental data. Our estimated accuracies are to within +/- 3% for the viscosity, +/- 5% for the binary diffusion coefficient and +/- 14% for the thermal conductivity.