Finding the Fourth Proportional to 67,516.72, 93,181 and 40,672.78

Step by Step Solution

1. Step 1: Write the proportion equation
   67,516.72 : 93,181 = 40,672.78 : x
2. Step 2: Convert to fraction form
   67,516.72/93,181 = 40,672.78/x
3. Step 3: Cross multiply
   67,516.72x = 93,181 × 40,672.78
4. Step 4: Simplify right side
   67,516.72x = 3,789,930,313.18
5. Step 5: Solve for x
   x = 3,789,930,313.18/67,516.72
6. Step 6: Final answer
   x = 56,133.21