The correct answer to the subtraction problem 45.86 - 23.67 is 22.19. This can be found by subtracting the decimal values in each place value column. Starting from the right, 6 minus 7 is -1, but since we cannot have a negative value in this case, we borrow 1 from the tens place. The 8 becomes 7, and 16 minus 7 equals 9. The decimal point remains in the same position. Therefore, the answer is 22.19.