Finding the Fourth Proportional to 142,713.72, 196,946.28 and 86,114.16

Step by Step Solution

1. Step 1: Write the proportion equation
   142,713.72 : 196,946.28 = 86,114.16 : x
2. Step 2: Convert to fraction form
   142,713.72/196,946.28 = 86,114.16/x
3. Step 3: Cross multiply
   142,713.72x = 196,946.28 × 86,114.16
4. Step 4: Simplify right side
   142,713.72x = 16,959,863,467.32
5. Step 5: Solve for x
   x = 16,959,863,467.32/142,713.72
6. Step 6: Final answer
   x = 118,838.35