Finding the Fourth Proportional to 142,013.02, 195,979.01 and 78,353.10

Step by Step Solution

1. Step 1: Write the proportion equation
   142,013.02 : 195,979.01 = 78,353.10 : x
2. Step 2: Convert to fraction form
   142,013.02/195,979.01 = 78,353.10/x
3. Step 3: Cross multiply
   142,013.02x = 195,979.01 × 78,353.10
4. Step 4: Simplify right side
   142,013.02x = 15,355,562,968.43
5. Step 5: Solve for x
   x = 15,355,562,968.43/142,013.02
6. Step 6: Final answer
   x = 108,127.85