Finding the Fourth Proportional to 31,076.32, 42,886.32 and 16,929.76

Step by Step Solution

1. Step 1: Write the proportion equation
   31,076.32 : 42,886.32 = 16,929.76 : x
2. Step 2: Convert to fraction form
   31,076.32/42,886.32 = 16,929.76/x
3. Step 3: Cross multiply
   31,076.32x = 42,886.32 × 16,929.76
4. Step 4: Simplify right side
   31,076.32x = 726,055,104.88
5. Step 5: Solve for x
   x = 726,055,104.88/31,076.32
6. Step 6: Final answer
   x = 23,363.61