Finding the Fourth Proportional to 30,921.30, 42,670.24 and 16,773.84

Step by Step Solution

1. Step 1: Write the proportion equation
   30,921.30 : 42,670.24 = 16,773.84 : x
2. Step 2: Convert to fraction form
   30,921.30/42,670.24 = 16,773.84/x
3. Step 3: Cross multiply
   30,921.30x = 42,670.24 × 16,773.84
4. Step 4: Simplify right side
   30,921.30x = 715,743,778.52
5. Step 5: Solve for x
   x = 715,743,778.52/30,921.30
6. Step 6: Final answer
   x = 23,147.27