Update:
According to
this PDF, jet fuel prices range from $1.58 to $1.69 per gallon.
So, the cost to fly that 747 on a 13.5 hour flight would range from approximately $76,788 to $82,134.
So assuming a full flight of 347 pax, with the 747 burning the most expensive jet fuel of $1.69/gallon, each passenger would need to fork over $236 to cover just the fuel costs.