Finding the Fourth Proportional to 30,781.42, 42,478.29 and 16,634.25

Step by Step Solution

1. Step 1: Write the proportion equation
   30,781.42 : 42,478.29 = 16,634.25 : x
2. Step 2: Convert to fraction form
   30,781.42/42,478.29 = 16,634.25/x
3. Step 3: Cross multiply
   30,781.42x = 42,478.29 × 16,634.25
4. Step 4: Simplify right side
   30,781.42x = 706,594,495.43
5. Step 5: Solve for x
   x = 706,594,495.43/30,781.42
6. Step 6: Final answer
   x = 22,955.23