Finding the Fourth Proportional to 30,889.49, 42,627.33 and 16,742.30

Step by Step Solution

1. Step 1: Write the proportion equation
   30,889.49 : 42,627.33 = 16,742.30 : x
2. Step 2: Convert to fraction form
   30,889.49/42,627.33 = 16,742.30/x
3. Step 3: Cross multiply
   30,889.49x = 42,627.33 × 16,742.30
4. Step 4: Simplify right side
   30,889.49x = 713,679,333.92
5. Step 5: Solve for x
   x = 713,679,333.92/30,889.49
6. Step 6: Final answer
   x = 23,104.28