Finding the Fourth Proportional to 31,095.28, 42,911.94 and 19,151.83

Step by Step Solution

1. Step 1: Write the proportion equation
   31,095.28 : 42,911.94 = 19,151.83 : x
2. Step 2: Convert to fraction form
   31,095.28/42,911.94 = 19,151.83/x
3. Step 3: Cross multiply
   31,095.28x = 42,911.94 × 19,151.83
4. Step 4: Simplify right side
   31,095.28x = 821,842,179.85
5. Step 5: Solve for x
   x = 821,842,179.85/31,095.28
6. Step 6: Final answer
   x = 26,429.80