Finding the Fourth Proportional to 142,834.82, 197,114.03 and 78,310.12

Step by Step Solution

1. Step 1: Write the proportion equation
   142,834.82 : 197,114.03 = 78,310.12 : x
2. Step 2: Convert to fraction form
   142,834.82/197,114.03 = 78,310.12/x
3. Step 3: Cross multiply
   142,834.82x = 197,114.03 × 78,310.12
4. Step 4: Simplify right side
   142,834.82x = 15,436,023,342.98
5. Step 5: Solve for x
   x = 15,436,023,342.98/142,834.82
6. Step 6: Final answer
   x = 108,069.05