Final answer:
1.9 x 10⁸ is approximately 10⁵ times larger than 4.2 x 10¹³.
Step-by-step explanation:
To estimate how many times larger 1.9 x 10⁸ is than 4.2 x 10¹³, we can compare the exponents of both numbers.
In scientific notation, the exponent indicates the number of zeros after the digit. So, for 1.9 x 10⁸, there are 8 zeros after the 1. For 4.2 x 10¹³, there are 13 zeros after the 4.
Therefore, 1.9 x 10⁸ is approximately 10⁵ times larger than 4.2 x 10¹³.