Finding the Fourth Proportional to 31,133.03, 42,912.36 and 22,061.43

Step by Step Solution

1. Step 1: Write the proportion equation
   31,133.03 : 42,912.36 = 22,061.43 : x
2. Step 2: Convert to fraction form
   31,133.03/42,912.36 = 22,061.43/x
3. Step 3: Cross multiply
   31,133.03x = 42,912.36 × 22,061.43
4. Step 4: Simplify right side
   31,133.03x = 946,708,026.27
5. Step 5: Solve for x
   x = 946,708,026.27/31,133.03
6. Step 6: Final answer
   x = 30,408.48