Finding the Fourth Proportional to 31,456.42, 43,424.33 and 19,526.78

Step by Step Solution

1. Step 1: Write the proportion equation
   31,456.42 : 43,424.33 = 19,526.78 : x
2. Step 2: Convert to fraction form
   31,456.42/43,424.33 = 19,526.78/x
3. Step 3: Cross multiply
   31,456.42x = 43,424.33 × 19,526.78
4. Step 4: Simplify right side
   31,456.42x = 847,937,338.56
5. Step 5: Solve for x
   x = 847,937,338.56/31,456.42
6. Step 6: Final answer
   x = 26,955.94