Finding the Fourth Proportional to 142,524.10, 196,675.04 and 78,858.10

Step by Step Solution

1. Step 1: Write the proportion equation
   142,524.10 : 196,675.04 = 78,858.10 : x
2. Step 2: Convert to fraction form
   142,524.10/196,675.04 = 78,858.10/x
3. Step 3: Cross multiply
   142,524.10x = 196,675.04 × 78,858.10
4. Step 4: Simplify right side
   142,524.10x = 15,509,419,971.82
5. Step 5: Solve for x
   x = 15,509,419,971.82/142,524.10
6. Step 6: Final answer
   x = 108,819.63