Finding the Fourth Proportional to 30,577.60, 42,193 and 16,965.42

Step by Step Solution

1. Step 1: Write the proportion equation
   30,577.60 : 42,193 = 16,965.42 : x
2. Step 2: Convert to fraction form
   30,577.60/42,193 = 16,965.42/x
3. Step 3: Cross multiply
   30,577.60x = 42,193 × 16,965.42
4. Step 4: Simplify right side
   30,577.60x = 715,821,966.06
5. Step 5: Solve for x
   x = 715,821,966.06/30,577.60
6. Step 6: Final answer
   x = 23,410.02