Finding the Fourth Proportional to 30,765.89, 42,456.94 and 16,618.74

Step by Step Solution

1. Step 1: Write the proportion equation
   30,765.89 : 42,456.94 = 16,618.74 : x
2. Step 2: Convert to fraction form
   30,765.89/42,456.94 = 16,618.74/x
3. Step 3: Cross multiply
   30,765.89x = 42,456.94 × 16,618.74
4. Step 4: Simplify right side
   30,765.89x = 705,580,805.51
5. Step 5: Solve for x
   x = 705,580,805.51/30,765.89
6. Step 6: Final answer
   x = 22,933.86