Finding the Fourth Proportional to 142,012.02, 195,977.63 and 78,352.10

Step by Step Solution

1. Step 1: Write the proportion equation
   142,012.02 : 195,977.63 = 78,352.10 : x
2. Step 2: Convert to fraction form
   142,012.02/195,977.63 = 78,352.10/x
3. Step 3: Cross multiply
   142,012.02x = 195,977.63 × 78,352.10
4. Step 4: Simplify right side
   142,012.02x = 15,355,258,863.52
5. Step 5: Solve for x
   x = 15,355,258,863.52/142,012.02
6. Step 6: Final answer
   x = 108,126.47