Finding the Fourth Proportional to 40,642.44, 56,105.74 and 30,574.71

Step by Step Solution

1. Step 1: Write the proportion equation
   40,642.44 : 56,105.74 = 30,574.71 : x
2. Step 2: Convert to fraction form
   40,642.44/56,105.74 = 30,574.71/x
3. Step 3: Cross multiply
   40,642.44x = 56,105.74 × 30,574.71
4. Step 4: Simplify right side
   40,642.44x = 1,715,416,978.45
5. Step 5: Solve for x
   x = 1,715,416,978.45/40,642.44
6. Step 6: Final answer
   x = 42,207.53