You have the magnitudes and angles with the x-axis of each vector. To find the resultant vector you need to convert these into vector components, and add them all together.

So first of all solve for the x-component:

Next for the y-components:

So your resultant force vector is:

And you can calculate the magnitude using pythagoras, and the direction using basic trig.

Once you have these:

Will give you the magnitude of your acceleration. And its direction will be the smae as that of the force vector.