Finding the Fourth Proportional to 40,194.79, 55,404.89 and 31,683.11

Step by Step Solution

1. Step 1: Write the proportion equation
   40,194.79 : 55,404.89 = 31,683.11 : x
2. Step 2: Convert to fraction form
   40,194.79/55,404.89 = 31,683.11/x
3. Step 3: Cross multiply
   40,194.79x = 55,404.89 × 31,683.11
4. Step 4: Simplify right side
   40,194.79x = 1,755,399,224.41
5. Step 5: Solve for x
   x = 1,755,399,224.41/40,194.79
6. Step 6: Final answer
   x = 43,672.31