Finding the Fourth Proportional to 32,211.88, 44,429.92 and 31,128.12

Step by Step Solution

1. Step 1: Write the proportion equation
   32,211.88 : 44,429.92 = 31,128.12 : x
2. Step 2: Convert to fraction form
   32,211.88/44,429.92 = 31,128.12/x
3. Step 3: Cross multiply
   32,211.88x = 44,429.92 × 31,128.12
4. Step 4: Simplify right side
   32,211.88x = 1,383,019,881.35
5. Step 5: Solve for x
   x = 1,383,019,881.35/32,211.88
6. Step 6: Final answer
   x = 42,935.09