Finding the Fourth Proportional to 30,543.58, 42,150.15 and 18,606.92

Step by Step Solution

1. Step 1: Write the proportion equation
   30,543.58 : 42,150.15 = 18,606.92 : x
2. Step 2: Convert to fraction form
   30,543.58/42,150.15 = 18,606.92/x
3. Step 3: Cross multiply
   30,543.58x = 42,150.15 × 18,606.92
4. Step 4: Simplify right side
   30,543.58x = 784,284,469.04
5. Step 5: Solve for x
   x = 784,284,469.04/30,543.58
6. Step 6: Final answer
   x = 25,677.56