Finding the Fourth Proportional to 31,075.96, 42,884.76 and 16,928.77

Step by Step Solution

1. Step 1: Write the proportion equation
   31,075.96 : 42,884.76 = 16,928.77 : x
2. Step 2: Convert to fraction form
   31,075.96/42,884.76 = 16,928.77/x
3. Step 3: Cross multiply
   31,075.96x = 42,884.76 × 16,928.77
4. Step 4: Simplify right side
   31,075.96x = 725,986,238.55
5. Step 5: Solve for x
   x = 725,986,238.55/31,075.96
6. Step 6: Final answer
   x = 23,361.67