Finding the Fourth Proportional to 30,915.56, 42,663.24 and 17,303.61

Step by Step Solution

1. Step 1: Write the proportion equation
   30,915.56 : 42,663.24 = 17,303.61 : x
2. Step 2: Convert to fraction form
   30,915.56/42,663.24 = 17,303.61/x
3. Step 3: Cross multiply
   30,915.56x = 42,663.24 × 17,303.61
4. Step 4: Simplify right side
   30,915.56x = 738,228,066.30
5. Step 5: Solve for x
   x = 738,228,066.30/30,915.56
6. Step 6: Final answer
   x = 23,878.85