Finding the Fourth Proportional to 142,454.39, 196,584.62 and 78,792.12

Step by Step Solution

1. Step 1: Write the proportion equation
   142,454.39 : 196,584.62 = 78,792.12 : x
2. Step 2: Convert to fraction form
   142,454.39/196,584.62 = 78,792.12/x
3. Step 3: Cross multiply
   142,454.39x = 196,584.62 × 78,792.12
4. Step 4: Simplify right side
   142,454.39x = 15,489,318,575.23
5. Step 5: Solve for x
   x = 15,489,318,575.23/142,454.39
6. Step 6: Final answer
   x = 108,731.78