Finding the Fourth Proportional to 140,105.46, 210,096.18 and 40,242.48

Step by Step Solution

1. Step 1: Write the proportion equation
   140,105.46 : 210,096.18 = 40,242.48 : x
2. Step 2: Convert to fraction form
   140,105.46/210,096.18 = 40,242.48/x
3. Step 3: Cross multiply
   140,105.46x = 210,096.18 × 40,242.48
4. Step 4: Simplify right side
   140,105.46x = 8,454,791,321.73
5. Step 5: Solve for x
   x = 8,454,791,321.73/140,105.46
6. Step 6: Final answer
   x = 60,345.91