Finding the Fourth Proportional to 30,816, 42,613.56 and 29,423.61

Step by Step Solution

1. Step 1: Write the proportion equation
   30,816 : 42,613.56 = 29,423.61 : x
2. Step 2: Convert to fraction form
   30,816/42,613.56 = 29,423.61/x
3. Step 3: Cross multiply
   30,816x = 42,613.56 × 29,423.61
4. Step 4: Simplify right side
   30,816x = 1,253,844,770.15
5. Step 5: Solve for x
   x = 1,253,844,770.15/30,816
6. Step 6: Final answer
   x = 40,688.11