Finding the Fourth Proportional to 30,832.72, 42,549.28 and 16,685.56

Step by Step Solution

1. Step 1: Write the proportion equation
   30,832.72 : 42,549.28 = 16,685.56 : x
2. Step 2: Convert to fraction form
   30,832.72/42,549.28 = 16,685.56/x
3. Step 3: Cross multiply
   30,832.72x = 42,549.28 × 16,685.56
4. Step 4: Simplify right side
   30,832.72x = 709,958,592.03
5. Step 5: Solve for x
   x = 709,958,592.03/30,832.72
6. Step 6: Final answer
   x = 23,026.14