Finding the Fourth Proportional to 23,111.46, 31,911.57 and 19,155.42

Step by Step Solution

1. Step 1: Write the proportion equation
   23,111.46 : 31,911.57 = 19,155.42 : x
2. Step 2: Convert to fraction form
   23,111.46/31,911.57 = 19,155.42/x
3. Step 3: Cross multiply
   23,111.46x = 31,911.57 × 19,155.42
4. Step 4: Simplify right side
   23,111.46x = 611,279,526.21
5. Step 5: Solve for x
   x = 611,279,526.21/23,111.46
6. Step 6: Final answer
   x = 26,449.20