math
posted by gregory .
4,000,000[(300,000)+x] = 147,000

Divide both sides by 1000 to get rid of confusing extra zeros.
4000  (300 + .001x) = 147
Get rid of parenthesis.
4000 300  .001x = 147
Combine terms and multiply by 1.
.001x = 3553
Multiply by 1000.
x = 3,553,000