Express 4,700,0004{,}700{,}0004,700,000 in scientific notation.
4.7×1054.7 \times 10^54.7×105
47×10547 \times 10^547×105
4.7×1064.7 \times 10^64.7×106
4.7×1074.7 \times 10^74.7×107