Finding the Fourth Proportional to 30,528.47, 42,129.82 and 17,099.61

Step by Step Solution

1. Step 1: Write the proportion equation
   30,528.47 : 42,129.82 = 17,099.61 : x
2. Step 2: Convert to fraction form
   30,528.47/42,129.82 = 17,099.61/x
3. Step 3: Cross multiply
   30,528.47x = 42,129.82 × 17,099.61
4. Step 4: Simplify right side
   30,528.47x = 720,403,354.76
5. Step 5: Solve for x
   x = 720,403,354.76/30,528.47
6. Step 6: Final answer
   x = 23,597.76