Finding the Fourth Proportional to 40,774.88, 56,290.42 and 31,679.92

Step by Step Solution

1. Step 1: Write the proportion equation
   40,774.88 : 56,290.42 = 31,679.92 : x
2. Step 2: Convert to fraction form
   40,774.88/56,290.42 = 31,679.92/x
3. Step 3: Cross multiply
   40,774.88x = 56,290.42 × 31,679.92
4. Step 4: Simplify right side
   40,774.88x = 1,783,276,002.37
5. Step 5: Solve for x
   x = 1,783,276,002.37/40,774.88
6. Step 6: Final answer
   x = 43,734.67