Finding the Fourth Proportional to 31,143.42, 42,977.25 and 16,996.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,143.42 : 42,977.25 = 16,996.50 : x
2. Step 2: Convert to fraction form
   31,143.42/42,977.25 = 16,996.50/x
3. Step 3: Cross multiply
   31,143.42x = 42,977.25 × 16,996.50
4. Step 4: Simplify right side
   31,143.42x = 730,462,829.63
5. Step 5: Solve for x
   x = 730,462,829.63/31,143.42
6. Step 6: Final answer
   x = 23,454.80