Finding the Fourth Proportional to 31,103.10, 42,900.39 and 19,162.62

Step by Step Solution

1. Step 1: Write the proportion equation
   31,103.10 : 42,900.39 = 19,162.62 : x
2. Step 2: Convert to fraction form
   31,103.10/42,900.39 = 19,162.62/x
3. Step 3: Cross multiply
   31,103.10x = 42,900.39 × 19,162.62
4. Step 4: Simplify right side
   31,103.10x = 822,083,871.42
5. Step 5: Solve for x
   x = 822,083,871.42/31,103.10
6. Step 6: Final answer
   x = 26,430.93