Finding the Fourth Proportional to 30,767.48, 42,459.15 and 16,620.33

Step by Step Solution

1. Step 1: Write the proportion equation
   30,767.48 : 42,459.15 = 16,620.33 : x
2. Step 2: Convert to fraction form
   30,767.48/42,459.15 = 16,620.33/x
3. Step 3: Cross multiply
   30,767.48x = 42,459.15 × 16,620.33
4. Step 4: Simplify right side
   30,767.48x = 705,685,084.52
5. Step 5: Solve for x
   x = 705,685,084.52/30,767.48
6. Step 6: Final answer
   x = 22,936.07