Finding the Fourth Proportional to 31,096.66, 42,911.31 and 18,349.18

Step by Step Solution

1. Step 1: Write the proportion equation
   31,096.66 : 42,911.31 = 18,349.18 : x
2. Step 2: Convert to fraction form
   31,096.66/42,911.31 = 18,349.18/x
3. Step 3: Cross multiply
   31,096.66x = 42,911.31 × 18,349.18
4. Step 4: Simplify right side
   31,096.66x = 787,387,351.23
5. Step 5: Solve for x
   x = 787,387,351.23/31,096.66
6. Step 6: Final answer
   x = 25,320.64