Finding the Fourth Proportional to 31,092.48, 42,907.56 and 16,945.28

Step by Step Solution

1. Step 1: Write the proportion equation
   31,092.48 : 42,907.56 = 16,945.28 : x
2. Step 2: Convert to fraction form
   31,092.48/42,907.56 = 16,945.28/x
3. Step 3: Cross multiply
   31,092.48x = 42,907.56 × 16,945.28
4. Step 4: Simplify right side
   31,092.48x = 727,080,618.32
5. Step 5: Solve for x
   x = 727,080,618.32/31,092.48
6. Step 6: Final answer
   x = 23,384.45