Finding the Fourth Proportional to 142,350.02, 196,435.35 and 78,684.02

Step by Step Solution

1. Step 1: Write the proportion equation
   142,350.02 : 196,435.35 = 78,684.02 : x
2. Step 2: Convert to fraction form
   142,350.02/196,435.35 = 78,684.02/x
3. Step 3: Cross multiply
   142,350.02x = 196,435.35 × 78,684.02
4. Step 4: Simplify right side
   142,350.02x = 15,456,322,025.93
5. Step 5: Solve for x
   x = 15,456,322,025.93/142,350.02
6. Step 6: Final answer
   x = 108,579.70