Finding the Fourth Proportional to 31,076.55, 42,885.58 and 16,929.39

Step by Step Solution

1. Step 1: Write the proportion equation
   31,076.55 : 42,885.58 = 16,929.39 : x
2. Step 2: Convert to fraction form
   31,076.55/42,885.58 = 16,929.39/x
3. Step 3: Cross multiply
   31,076.55x = 42,885.58 × 16,929.39
4. Step 4: Simplify right side
   31,076.55x = 726,026,709.20
5. Step 5: Solve for x
   x = 726,026,709.20/31,076.55
6. Step 6: Final answer
   x = 23,362.53