Thanks, I did resize the extended partition, and now have about 19G unallocated. Since then I changed over to gpt partition table. Looks like this now.
fdisk -l
Disk /dev/sda: 111.8 GiB, 120034123776 bytes, 234441648 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 12B29F40-246B-47F1-B186-24439906F4F1
Device Start End Sectors Size Type
/dev/sda1 2048 83967 81920 40M Microsoft basic data
/dev/sda2 83968 4483071 4399104 2.1G Linux swap
/dev/sda3 4483072 67397631 62914560 30G Linux filesystem
/dev/sda4 67399680 193228799 125829120 60G Linux filesystem
/dev/sda5 193228800 193230847 2048 1M BIOS boot
