Finding the Fourth Proportional to 31,731.98, 43,701.30 and 31,043.18

Step by Step Solution

1. Step 1: Write the proportion equation
   31,731.98 : 43,701.30 = 31,043.18 : x
2. Step 2: Convert to fraction form
   31,731.98/43,701.30 = 31,043.18/x
3. Step 3: Cross multiply
   31,731.98x = 43,701.30 × 31,043.18
4. Step 4: Simplify right side
   31,731.98x = 1,356,627,322.13
5. Step 5: Solve for x
   x = 1,356,627,322.13/31,731.98
6. Step 6: Final answer
   x = 42,752.68