Finding the Fourth Proportional to 40,688.56, 60,786.22 and 25,778.16

Step by Step Solution

1. Step 1: Write the proportion equation
   40,688.56 : 60,786.22 = 25,778.16 : x
2. Step 2: Convert to fraction form
   40,688.56/60,786.22 = 25,778.16/x
3. Step 3: Cross multiply
   40,688.56x = 60,786.22 × 25,778.16
4. Step 4: Simplify right side
   40,688.56x = 1,566,956,904.96
5. Step 5: Solve for x
   x = 1,566,956,904.96/40,688.56
6. Step 6: Final answer
   x = 38,510.99