Finding the Fourth Proportional to 30,885.30, 42,621.30 and 16,738.02

Step by Step Solution

1. Step 1: Write the proportion equation
   30,885.30 : 42,621.30 = 16,738.02 : x
2. Step 2: Convert to fraction form
   30,885.30/42,621.30 = 16,738.02/x
3. Step 3: Cross multiply
   30,885.30x = 42,621.30 × 16,738.02
4. Step 4: Simplify right side
   30,885.30x = 713,396,171.83
5. Step 5: Solve for x
   x = 713,396,171.83/30,885.30
6. Step 6: Final answer
   x = 23,098.24