To express 45,320,000,000 in scientific notation, you need to move the decimal point to the left until you have a number between 1 and 10.
For 45,320,000,000, the decimal point is initially after the last zero. Moving the decimal point 10 places to the left gives you 4.532.
Thus, in scientific notation, 45,320,000,000 can be represented as:
\[ 4.532 \times 10^{10} \]