Finding the Fourth Proportional to 30,915.87, 42,670.27 and 17,487.69

Step by Step Solution

1. Step 1: Write the proportion equation
   30,915.87 : 42,670.27 = 17,487.69 : x
2. Step 2: Convert to fraction form
   30,915.87/42,670.27 = 17,487.69/x
3. Step 3: Cross multiply
   30,915.87x = 42,670.27 × 17,487.69
4. Step 4: Simplify right side
   30,915.87x = 746,204,453.98
5. Step 5: Solve for x
   x = 746,204,453.98/30,915.87
6. Step 6: Final answer
   x = 24,136.62