Finding the Fourth Proportional to 142,012.77, 195,978.25 and 78,352.44

Step by Step Solution

1. Step 1: Write the proportion equation
   142,012.77 : 195,978.25 = 78,352.44 : x
2. Step 2: Convert to fraction form
   142,012.77/195,978.25 = 78,352.44/x
3. Step 3: Cross multiply
   142,012.77x = 195,978.25 × 78,352.44
4. Step 4: Simplify right side
   142,012.77x = 15,355,374,074.43
5. Step 5: Solve for x
   x = 15,355,374,074.43/142,012.77
6. Step 6: Final answer
   x = 108,126.71