Four feet six inches is the same as 4.5 feet tall.
If Frank is 0.5 feet taller than Pepe, then he is 4.5+0.5=<<0.5+4.5=5>>5 feet tall.
If Larry is one foot taller than Frank, then he is 5+1=6 feet tall.
If Ben is one foot taller than Larry, then he is 6+1=<<6+1=7>>7 feet tall.
If Big Joe is one foot taller than Ben, then he is 7+1=<<7+1=8>>8 feet tall.
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