Finding the Fourth Proportional to 142,268.45, 196,334.42 and 78,610.37

Step by Step Solution

1. Step 1: Write the proportion equation
   142,268.45 : 196,334.42 = 78,610.37 : x
2. Step 2: Convert to fraction form
   142,268.45/196,334.42 = 78,610.37/x
3. Step 3: Cross multiply
   142,268.45x = 196,334.42 × 78,610.37
4. Step 4: Simplify right side
   142,268.45x = 15,433,920,025.21
5. Step 5: Solve for x
   x = 15,433,920,025.21/142,268.45
6. Step 6: Final answer
   x = 108,484.49