| ( | 156869 | − | x | ) | ÷ | x | = | 392 500 |
| Multiply both sides of the equation by: | x |
| ( | 156869 | − | x | ) | = | 392 500 | x |
| 156869 | − | x | = | 392 500 | x |
| - | x | − | 392 500 | x | = | - | 156869 |
| - | 223 125 | x | = | - | 156869 |
| 156869 | = | 223 125 | x |
223 125 | x | = | 156869 |
| x | = | 156869 | ÷ | 223 125 |
| = | 156869 | × | 125 223 |
| x | = | 19608625 223 |
| x | = | 87931.053812 |