Finding the Fourth Proportional to 40,422.34, 55,763.52 and 31,408.18

Step by Step Solution

1. Step 1: Write the proportion equation
   40,422.34 : 55,763.52 = 31,408.18 : x
2. Step 2: Convert to fraction form
   40,422.34/55,763.52 = 31,408.18/x
3. Step 3: Cross multiply
   40,422.34x = 55,763.52 × 31,408.18
4. Step 4: Simplify right side
   40,422.34x = 1,751,430,673.59
5. Step 5: Solve for x
   x = 1,751,430,673.59/40,422.34
6. Step 6: Final answer
   x = 43,328.29