Finding the Fourth Proportional to 31,076.68, 42,885.59 and 16,929.53

Step by Step Solution

1. Step 1: Write the proportion equation
   31,076.68 : 42,885.59 = 16,929.53 : x
2. Step 2: Convert to fraction form
   31,076.68/42,885.59 = 16,929.53/x
3. Step 3: Cross multiply
   31,076.68x = 42,885.59 × 16,929.53
4. Step 4: Simplify right side
   31,076.68x = 726,032,882.47
5. Step 5: Solve for x
   x = 726,032,882.47/31,076.68
6. Step 6: Final answer
   x = 23,362.63