Finding the Fourth Proportional to 30,765.32, 42,456.15 and 16,618.16

Step by Step Solution

1. Step 1: Write the proportion equation
   30,765.32 : 42,456.15 = 16,618.16 : x
2. Step 2: Convert to fraction form
   30,765.32/42,456.15 = 16,618.16/x
3. Step 3: Cross multiply
   30,765.32x = 42,456.15 × 16,618.16
4. Step 4: Simplify right side
   30,765.32x = 705,542,881.40
5. Step 5: Solve for x
   x = 705,542,881.40/30,765.32
6. Step 6: Final answer
   x = 22,933.06