Finding the Fourth Proportional to 30,766.78, 42,458.16 and 16,619.63

Step by Step Solution

1. Step 1: Write the proportion equation
   30,766.78 : 42,458.16 = 16,619.63 : x
2. Step 2: Convert to fraction form
   30,766.78/42,458.16 = 16,619.63/x
3. Step 3: Cross multiply
   30,766.78x = 42,458.16 × 16,619.63
4. Step 4: Simplify right side
   30,766.78x = 705,638,666.23
5. Step 5: Solve for x
   x = 705,638,666.23/30,766.78
6. Step 6: Final answer
   x = 22,935.08