The inductive reactance, XL = 2 π f L
where f is the frequency in Hz, L is the inductance in H.
XL = 2 * pi * 75 Hz * 235 * 10-3 H
XL = 111 Ω
Just to clear things up:
- There are things that contribute to reactance; capacitors and inductors.
- The circuit provided only has reactance due to the inductor.
- In general the total reactance, X = XC + XL
I hope this helps.