Finding the Fourth Proportional to 30,902.68, 42,645.31 and 16,755.49

Step by Step Solution

1. Step 1: Write the proportion equation
   30,902.68 : 42,645.31 = 16,755.49 : x
2. Step 2: Convert to fraction form
   30,902.68/42,645.31 = 16,755.49/x
3. Step 3: Cross multiply
   30,902.68x = 42,645.31 × 16,755.49
4. Step 4: Simplify right side
   30,902.68x = 714,543,065.25
5. Step 5: Solve for x
   x = 714,543,065.25/30,902.68
6. Step 6: Final answer
   x = 23,122.37