Finding the Fourth Proportional to 142,380.06, 196,476.63 and 78,714.06

Step by Step Solution

1. Step 1: Write the proportion equation
   142,380.06 : 196,476.63 = 78,714.06 : x
2. Step 2: Convert to fraction form
   142,380.06/196,476.63 = 78,714.06/x
3. Step 3: Cross multiply
   142,380.06x = 196,476.63 × 78,714.06
4. Step 4: Simplify right side
   142,380.06x = 15,465,473,242.42
5. Step 5: Solve for x
   x = 15,465,473,242.42/142,380.06
6. Step 6: Final answer
   x = 108,621.06