Finding the Fourth Proportional to 142,114.30, 196,116.78 and 78,452.08

Step by Step Solution

1. Step 1: Write the proportion equation
   142,114.30 : 196,116.78 = 78,452.08 : x
2. Step 2: Convert to fraction form
   142,114.30/196,116.78 = 78,452.08/x
3. Step 3: Cross multiply
   142,114.30x = 196,116.78 × 78,452.08
4. Step 4: Simplify right side
   142,114.30x = 15,385,769,313.90
5. Step 5: Solve for x
   x = 15,385,769,313.90/142,114.30
6. Step 6: Final answer
   x = 108,263.34