Finding the Fourth Proportional to 30,734.58, 42,423.33 and 20,663.43

Step by Step Solution

1. Step 1: Write the proportion equation
   30,734.58 : 42,423.33 = 20,663.43 : x
2. Step 2: Convert to fraction form
   30,734.58/42,423.33 = 20,663.43/x
3. Step 3: Cross multiply
   30,734.58x = 42,423.33 × 20,663.43
4. Step 4: Simplify right side
   30,734.58x = 876,611,509.82
5. Step 5: Solve for x
   x = 876,611,509.82/30,734.58
6. Step 6: Final answer
   x = 28,521.99