From the passage provided, extract the total product revenue and % YoY growth using format: {$x} product revenue with {x%} YoY growth

Product revenue of $555.3 million in the fourth quarter, representing 54% year-over-year growth
Remaining performance obligations of $3.7 billion, representing 38% year-over-year growth
7,828 total customers
Net revenue retention rate of 158%
330 customers with trailing 12-month product revenue greater than $1 million
Authorized a $2.0 billion stock repurchase program

$555.3m product revenue with 54% YoY growth