Finding the Fourth Proportional to 31,076.76, 42,886.76 and 16,930.52

Step by Step Solution

1. Step 1: Write the proportion equation
   31,076.76 : 42,886.76 = 16,930.52 : x
2. Step 2: Convert to fraction form
   31,076.76/42,886.76 = 16,930.52/x
3. Step 3: Cross multiply
   31,076.76x = 42,886.76 × 16,930.52
4. Step 4: Simplify right side
   31,076.76x = 726,095,147.92
5. Step 5: Solve for x
   x = 726,095,147.92/31,076.76
6. Step 6: Final answer
   x = 23,364.57