Finding the Fourth Proportional to 30,780.50, 42,477.09 and 17,532.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,780.50 : 42,477.09 = 17,532.50 : x
2. Step 2: Convert to fraction form
   30,780.50/42,477.09 = 17,532.50/x
3. Step 3: Cross multiply
   30,780.50x = 42,477.09 × 17,532.50
4. Step 4: Simplify right side
   30,780.50x = 744,729,580.43
5. Step 5: Solve for x
   x = 744,729,580.43/30,780.50
6. Step 6: Final answer
   x = 24,194.85