Route Approvals based on cost center with different authority levels using mapping sets

we have requirement to route approvals based on cost center i.e. segment2 that to at line level with some threshold amounts. Below is one of the example where we have around 520 unique cost center with authority level upto three levels.

CostCenter    PersonNumber    AuthorityLevel    AmountFrom    AmountTo
10001    11512    1    50001    
10001    9305    2    5001    50000
10001    11699    3    0    5000
10001    11749    3    0    5000
10002    3250    1    50001    
10002    2252    1    50001    
10002    4634    1    50001    
10002    4424    2    0    50000
10002    10564    2    0    50000
10002    8656    2    0    50000
10002    1371    2    0    50000

Can you please let us know on how to achieve the same.