Finding the Fourth Proportional to 40,774.22, 56,239.98 and 39,402.59

Step by Step Solution

1. Step 1: Write the proportion equation
   40,774.22 : 56,239.98 = 39,402.59 : x
2. Step 2: Convert to fraction form
   40,774.22/56,239.98 = 39,402.59/x
3. Step 3: Cross multiply
   40,774.22x = 56,239.98 × 39,402.59
4. Step 4: Simplify right side
   40,774.22x = 2,216,000,873.55
5. Step 5: Solve for x
   x = 2,216,000,873.55/40,774.22
6. Step 6: Final answer
   x = 54,348.09