Twitter Facebook Linkedin Share Text Submit Integration

I am looking for a basic social media integration project to be completed. We currently have users interacting with our site - specifically, when they are signed in, they can provide their expectations for quarterly earnings. They input a number (ie $0.25) and an outlook (positive, neutral, negative). I simply want them to have the option, upon submitting a number to us, to also submit it to their Twitter, Linkedin, and Facebook pages. I need some ability to customize the message that is submitted to those sites (like "I just entered my whisper number of $0.25 for $TICKER at [login to view URL]") on my side, but also have the user modify the [login to view URL] let me know how much this would cost, how much time is needed, and how soon it could be completed. I am not looking for them to sign in with their twitter/facebook/linkedin usernames. They will already be signed in with our site. I just need them to be able to share the specific text they shared with us with their accounts. So they enter their number, then have the option to select a check box to share on the twiitter/facebook/linkedin accounts - if they're not signed in with those, then they would be asked to sign in. Thank you.