Finding the Fourth Proportional to 31,008.32, 42,800.16 and 19,073.60

Step by Step Solution

1. Step 1: Write the proportion equation
   31,008.32 : 42,800.16 = 19,073.60 : x
2. Step 2: Convert to fraction form
   31,008.32/42,800.16 = 19,073.60/x
3. Step 3: Cross multiply
   31,008.32x = 42,800.16 × 19,073.60
4. Step 4: Simplify right side
   31,008.32x = 816,353,131.78
5. Step 5: Solve for x
   x = 816,353,131.78/31,008.32
6. Step 6: Final answer
   x = 26,326.91