Finding the Fourth Proportional to 142,034.45, 195,997.85 and 78,373.31

Step by Step Solution

1. Step 1: Write the proportion equation
   142,034.45 : 195,997.85 = 78,373.31 : x
2. Step 2: Convert to fraction form
   142,034.45/195,997.85 = 78,373.31/x
3. Step 3: Cross multiply
   142,034.45x = 195,997.85 × 78,373.31
4. Step 4: Simplify right side
   142,034.45x = 15,361,000,355.51
5. Step 5: Solve for x
   x = 15,361,000,355.51/142,034.45
6. Step 6: Final answer
   x = 108,149.82