If you don't already have $150,000 to spend building the Swim Center then you are much more than likely to not meet the time limit on this goal.
I had to spend almost 2 days raising the funds.
After you build the center you need to look at a diving board for 12 hours, have 5 Sims at the pool at one time, admire the trophies and then spend 1 day hiding in the bathroom (I may have the order slightly off). After all this you should be at about 18%. Lastly, you need to talk to the Bunny out front for 8.5 hours.
To be Continued...