Finding the Fourth Proportional to 31,012.98, 42,798.24 and 16,865.82

Step by Step Solution

1. Step 1: Write the proportion equation
   31,012.98 : 42,798.24 = 16,865.82 : x
2. Step 2: Convert to fraction form
   31,012.98/42,798.24 = 16,865.82/x
3. Step 3: Cross multiply
   31,012.98x = 42,798.24 × 16,865.82
4. Step 4: Simplify right side
   31,012.98x = 721,827,412.16
5. Step 5: Solve for x
   x = 721,827,412.16/31,012.98
6. Step 6: Final answer
   x = 23,275.01