Finding the Fourth Proportional to 30,857.98, 42,583.71 and 16,710.58

Step by Step Solution

1. Step 1: Write the proportion equation
   30,857.98 : 42,583.71 = 16,710.58 : x
2. Step 2: Convert to fraction form
   30,857.98/42,583.71 = 16,710.58/x
3. Step 3: Cross multiply
   30,857.98x = 42,583.71 × 16,710.58
4. Step 4: Simplify right side
   30,857.98x = 711,598,492.65
5. Step 5: Solve for x
   x = 711,598,492.65/30,857.98
6. Step 6: Final answer
   x = 23,060.44