Finding the Fourth Proportional to 30,589.30, 42,213.72 and 16,976.98

Step by Step Solution

1. Step 1: Write the proportion equation
   30,589.30 : 42,213.72 = 16,976.98 : x
2. Step 2: Convert to fraction form
   30,589.30/42,213.72 = 16,976.98/x
3. Step 3: Cross multiply
   30,589.30x = 42,213.72 × 16,976.98
4. Step 4: Simplify right side
   30,589.30x = 716,661,480.17
5. Step 5: Solve for x
   x = 716,661,480.17/30,589.30
6. Step 6: Final answer
   x = 23,428.50