Finding the Fourth Proportional to 30,967.82, 42,735.39 and 16,820.54

Step by Step Solution

1. Step 1: Write the proportion equation
   30,967.82 : 42,735.39 = 16,820.54 : x
2. Step 2: Convert to fraction form
   30,967.82/42,735.39 = 16,820.54/x
3. Step 3: Cross multiply
   30,967.82x = 42,735.39 × 16,820.54
4. Step 4: Simplify right side
   30,967.82x = 718,832,123.23
5. Step 5: Solve for x
   x = 718,832,123.23/30,967.82
6. Step 6: Final answer
   x = 23,212.23