Finding the Fourth Proportional to 40,096.45, 60,102.42 and 13,435.57

Step by Step Solution

1. Step 1: Write the proportion equation
   40,096.45 : 60,102.42 = 13,435.57 : x
2. Step 2: Convert to fraction form
   40,096.45/60,102.42 = 13,435.57/x
3. Step 3: Cross multiply
   40,096.45x = 60,102.42 × 13,435.57
4. Step 4: Simplify right side
   40,096.45x = 807,510,271.08
5. Step 5: Solve for x
   x = 807,510,271.08/40,096.45
6. Step 6: Final answer
   x = 20,139.20