Finding the Fourth Proportional to 31,410.68, 47,111.16 and 20,395.48

Step by Step Solution

1. Step 1: Write the proportion equation
   31,410.68 : 47,111.16 = 20,395.48 : x
2. Step 2: Convert to fraction form
   31,410.68/47,111.16 = 20,395.48/x
3. Step 3: Cross multiply
   31,410.68x = 47,111.16 × 20,395.48
4. Step 4: Simplify right side
   31,410.68x = 960,854,721.56
5. Step 5: Solve for x
   x = 960,854,721.56/31,410.68
6. Step 6: Final answer
   x = 30,590.06