Imagine all the extraterrestrial matter that earth absorbs over a given time frame (multiple of years, to account for the orbital path). If all of that is converted (perfectly) to energy at E=mc^2, is that figure greater than the energy that hit earth in the form of solar radiation, during that time?
The part about the sun is a pretty straightforward calculation.
Look up the sun’s luminosity.
Divide by 4 pi a^2, where a is one au, the distance from the earth to the sun, to get the luminous flux (or just look that up).
Multiply by pi r^2, where r is the earth’s radius to get the luminous power incident on the earth.
Multiply by the absorbtivity of the earth to get the power aborbed.
Divide by c^2 to convert the energy rate to an equivalent mass rate.
Multiply by some arbitrary time if you want to get a mass.
You can easily look up all that and calculate. I don’t have a good idea, though, how to do the ET part unless you can look it up somewhere. It may be that the sun’s equivalent mass per time is small enough or big enough that the answer is fairly obvious. You’ll have to work it out and see.
—- I found a source that said the meteorite material ranges from 37-78,000 tons (presumably imperial tons). That should give you a basis to compare.