Finding the Fourth Proportional to 30,759.78, 42,448.47 and 16,612.62

Step by Step Solution

1. Step 1: Write the proportion equation
   30,759.78 : 42,448.47 = 16,612.62 : x
2. Step 2: Convert to fraction form
   30,759.78/42,448.47 = 16,612.62/x
3. Step 3: Cross multiply
   30,759.78x = 42,448.47 × 16,612.62
4. Step 4: Simplify right side
   30,759.78x = 705,180,301.69
5. Step 5: Solve for x
   x = 705,180,301.69/30,759.78
6. Step 6: Final answer
   x = 22,925.40