If €1 is with £0.89, and £1.00 is worth ¥48, what is ¥256 in €?

I don't know where to find those number on my keyboard so I will subsitute

€=x£=y¥=zso

1x=0.89y

and 1y=48z

first find conversion factor from z to x

1x=0.89y

y=48z

subsitute 48z for y in first equation

x=0.89 (48z)

x=42.72z

divide both sides by 42.72

x/42.72=z

256z is wanted so

multiply both sides by 256

x/1 times 256/42.72=256z

5.99251x=256z

there are aprox 5.99x in 256z or about 6