Finding the Fourth Proportional to 30,769.78, 42,462.32 and 16,622.63

Step by Step Solution

1. Step 1: Write the proportion equation
   30,769.78 : 42,462.32 = 16,622.63 : x
2. Step 2: Convert to fraction form
   30,769.78/42,462.32 = 16,622.63/x
3. Step 3: Cross multiply
   30,769.78x = 42,462.32 × 16,622.63
4. Step 4: Simplify right side
   30,769.78x = 705,835,434.30
5. Step 5: Solve for x
   x = 705,835,434.30/30,769.78
6. Step 6: Final answer
   x = 22,939.24