In MATLAB, you can use typecast function to convert 32-bit binary data type to floating-point type. The concrete implementation is as follows:

` ` matlab

% Converts a 32-bit binary data type to a floating-point type

data = uint 8([0x Fe 0x ff 0x ab 0x2C])； % Assume that the four bytes received are 0xFE, 0xFF, 0xAB and 0x2C respectively.

floatData = typecast(uint8(data)，' single ')；

% output the converted result

disp(float data)；

```

In this program, we first store the received four bytes into an array data of type uint8. Then use typecast function to convert the data array into a single-precision floating-point number (that is, a 32-bit floating-point type) and store it in a floatData variable.

Finally, we use the disp function to output the converted result.