Finding the Fourth Proportional to 30,928.64, 42,681.52 and 17,499.62

Step by Step Solution

1. Step 1: Write the proportion equation
   30,928.64 : 42,681.52 = 17,499.62 : x
2. Step 2: Convert to fraction form
   30,928.64/42,681.52 = 17,499.62/x
3. Step 3: Cross multiply
   30,928.64x = 42,681.52 × 17,499.62
4. Step 4: Simplify right side
   30,928.64x = 746,910,381.02
5. Step 5: Solve for x
   x = 746,910,381.02/30,928.64
6. Step 6: Final answer
   x = 24,149.47