Finding the Fourth Proportional to 30,618.87, 42,251.15 and 17,187.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,618.87 : 42,251.15 = 17,187.50 : x
2. Step 2: Convert to fraction form
   30,618.87/42,251.15 = 17,187.50/x
3. Step 3: Cross multiply
   30,618.87x = 42,251.15 × 17,187.50
4. Step 4: Simplify right side
   30,618.87x = 726,191,343.43
5. Step 5: Solve for x
   x = 726,191,343.43/30,618.87
6. Step 6: Final answer
   x = 23,717.12