Finding the Fourth Proportional to 40,727.89, 56,281.69 and 30,638.82

Step by Step Solution

1. Step 1: Write the proportion equation
   40,727.89 : 56,281.69 = 30,638.82 : x
2. Step 2: Convert to fraction form
   40,727.89/56,281.69 = 30,638.82/x
3. Step 3: Cross multiply
   40,727.89x = 56,281.69 × 30,638.82
4. Step 4: Simplify right side
   40,727.89x = 1,724,404,569.21
5. Step 5: Solve for x
   x = 1,724,404,569.21/40,727.89
6. Step 6: Final answer
   x = 42,339.65