Finding the Fourth Proportional to 31,075.14, 42,885 and 16,928.76

Step by Step Solution

1. Step 1: Write the proportion equation
   31,075.14 : 42,885 = 16,928.76 : x
2. Step 2: Convert to fraction form
   31,075.14/42,885 = 16,928.76/x
3. Step 3: Cross multiply
   31,075.14x = 42,885 × 16,928.76
4. Step 4: Simplify right side
   31,075.14x = 725,989,872.60
5. Step 5: Solve for x
   x = 725,989,872.60/31,075.14
6. Step 6: Final answer
   x = 23,362.40