Finding the Fourth Proportional to 72,676.72, 100,302.18 and 40,414.55

Step by Step Solution

1. Step 1: Write the proportion equation
   72,676.72 : 100,302.18 = 40,414.55 : x
2. Step 2: Convert to fraction form
   72,676.72/100,302.18 = 40,414.55/x
3. Step 3: Cross multiply
   72,676.72x = 100,302.18 × 40,414.55
4. Step 4: Simplify right side
   72,676.72x = 4,053,667,468.72
5. Step 5: Solve for x
   x = 4,053,667,468.72/72,676.72
6. Step 6: Final answer
   x = 55,776.70