Finding the Fourth Proportional to 31,878.17, 43,991.25 and 17,730.71

Step by Step Solution

1. Step 1: Write the proportion equation
   31,878.17 : 43,991.25 = 17,730.71 : x
2. Step 2: Convert to fraction form
   31,878.17/43,991.25 = 17,730.71/x
3. Step 3: Cross multiply
   31,878.17x = 43,991.25 × 17,730.71
4. Step 4: Simplify right side
   31,878.17x = 779,996,096.29
5. Step 5: Solve for x
   x = 779,996,096.29/31,878.17
6. Step 6: Final answer
   x = 24,468.03