Let's assume the number of female attendees is x.
The number of male attendees is x+4.
The sum of male attendees and female attendees is x+x+4 = 120
2x+4 = 120
2x = 116
The number of female attendees is x=116/2 = <<116/2=58>>58
The number of male attendees is 58+4 = <<58+4=62>>62
#### 62