Finding the Fourth Proportional to 31,076.89, 42,886.08 and 16,929.74

Step by Step Solution

1. Step 1: Write the proportion equation
   31,076.89 : 42,886.08 = 16,929.74 : x
2. Step 2: Convert to fraction form
   31,076.89/42,886.08 = 16,929.74/x
3. Step 3: Cross multiply
   31,076.89x = 42,886.08 × 16,929.74
4. Step 4: Simplify right side
   31,076.89x = 726,050,291.23
5. Step 5: Solve for x
   x = 726,050,291.23/31,076.89
6. Step 6: Final answer
   x = 23,363.03