Finding the Fourth Proportional to 30,902.72, 42,645.86 and 16,755.58

Step by Step Solution

1. Step 1: Write the proportion equation
   30,902.72 : 42,645.86 = 16,755.58 : x
2. Step 2: Convert to fraction form
   30,902.72/42,645.86 = 16,755.58/x
3. Step 3: Cross multiply
   30,902.72x = 42,645.86 × 16,755.58
4. Step 4: Simplify right side
   30,902.72x = 714,556,118.90
5. Step 5: Solve for x
   x = 714,556,118.90/30,902.72
6. Step 6: Final answer
   x = 23,122.76