A typical example of someone taking the output of a simulator and not correcting for real world values, nothing in the circuit is THAT critical.
The input resistor (49.9R) can be 47 or 51. The 43.2R filter resistor on the 5V supply can be 47, 51 or whatever (probably anything up to 100R would be ok). The 33.2R series terminator on the output can be 33R.
Edit: Actually, as the circuit doesn't specify what 'cmos logic' family the output series terminator is a bit academic. Ideally it should be 50R minus the output resistance of the logic device. 33R is a reasonable ballpark value. Also, as the circuit is to convert sine to square wave, the inverter really ought to have a schmitt trigger input.