Finding the Fourth Proportional to 31,167.78, 43,009.83 and 19,231.98

Step by Step Solution

1. Step 1: Write the proportion equation
   31,167.78 : 43,009.83 = 19,231.98 : x
2. Step 2: Convert to fraction form
   31,167.78/43,009.83 = 19,231.98/x
3. Step 3: Cross multiply
   31,167.78x = 43,009.83 × 19,231.98
4. Step 4: Simplify right side
   31,167.78x = 827,164,190.36
5. Step 5: Solve for x
   x = 827,164,190.36/31,167.78
6. Step 6: Final answer
   x = 26,539.08