Finding the Fourth Proportional to 31,731.45, 43,700.61 and 31,042.68

Step by Step Solution

1. Step 1: Write the proportion equation
   31,731.45 : 43,700.61 = 31,042.68 : x
2. Step 2: Convert to fraction form
   31,731.45/43,700.61 = 31,042.68/x
3. Step 3: Cross multiply
   31,731.45x = 43,700.61 × 31,042.68
4. Step 4: Simplify right side
   31,731.45x = 1,356,584,052.03
5. Step 5: Solve for x
   x = 1,356,584,052.03/31,731.45
6. Step 6: Final answer
   x = 42,752.03