Finding the Fourth Proportional to 142,341.18, 196,429.23 and 78,680.04

Step by Step Solution

1. Step 1: Write the proportion equation
   142,341.18 : 196,429.23 = 78,680.04 : x
2. Step 2: Convert to fraction form
   142,341.18/196,429.23 = 78,680.04/x
3. Step 3: Cross multiply
   142,341.18x = 196,429.23 × 78,680.04
4. Step 4: Simplify right side
   142,341.18x = 15,455,059,673.57
5. Step 5: Solve for x
   x = 15,455,059,673.57/142,341.18
6. Step 6: Final answer
   x = 108,577.57