Single column showing cumulative probability of all results with same value

[Lon]

I'm trying to create a chart of the following data that will (automatically)
cumulate the probabilities of the three $0 events and show them as a single
column having a probability of .53.

I can create a regular column chart that shows three columns, each with a
value of $0 (along with the three columns showing $1,000,000 and $125,000
and $50,000).

Is there any way to get the chart to add together the probabilities of the
three $0 events, before it draws columns?

Probability of this event occurring Value if this event occurs
0.10 $1,000,000
0.16 $125,000
0.21 $50,000
0.05 $0
0.28 $0
0.20 $0


Thanks,

-Lon