Finding the Fourth Proportional to 31,191.12, 42,943.98 and 25,242.48

Step by Step Solution

1. Step 1: Write the proportion equation
   31,191.12 : 42,943.98 = 25,242.48 : x
2. Step 2: Convert to fraction form
   31,191.12/42,943.98 = 25,242.48/x
3. Step 3: Cross multiply
   31,191.12x = 42,943.98 × 25,242.48
4. Step 4: Simplify right side
   31,191.12x = 1,084,012,556.27
5. Step 5: Solve for x
   x = 1,084,012,556.27/31,191.12
6. Step 6: Final answer
   x = 34,753.88