Finding the Fourth Proportional to 31,100.28, 42,918.84 and 19,156.83

Step by Step Solution

1. Step 1: Write the proportion equation
   31,100.28 : 42,918.84 = 19,156.83 : x
2. Step 2: Convert to fraction form
   31,100.28/42,918.84 = 19,156.83/x
3. Step 3: Cross multiply
   31,100.28x = 42,918.84 × 19,156.83
4. Step 4: Simplify right side
   31,100.28x = 822,188,921.68
5. Step 5: Solve for x
   x = 822,188,921.68/31,100.28
6. Step 6: Final answer
   x = 26,436.70