Finding the Fourth Proportional to 30,951, 42,717.78 and 18,375.48

Step by Step Solution

1. Step 1: Write the proportion equation
   30,951 : 42,717.78 = 18,375.48 : x
2. Step 2: Convert to fraction form
   30,951/42,717.78 = 18,375.48/x
3. Step 3: Cross multiply
   30,951x = 42,717.78 × 18,375.48
4. Step 4: Simplify right side
   30,951x = 784,959,712.03
5. Step 5: Solve for x
   x = 784,959,712.03/30,951
6. Step 6: Final answer
   x = 25,361.37