Finding the Fourth Proportional to 31,130.58, 42,960.15 and 16,983.45

Step by Step Solution

1. Step 1: Write the proportion equation
   31,130.58 : 42,960.15 = 16,983.45 : x
2. Step 2: Convert to fraction form
   31,130.58/42,960.15 = 16,983.45/x
3. Step 3: Cross multiply
   31,130.58x = 42,960.15 × 16,983.45
4. Step 4: Simplify right side
   31,130.58x = 729,611,559.52
5. Step 5: Solve for x
   x = 729,611,559.52/31,130.58
6. Step 6: Final answer
   x = 23,437.13