Finding the Fourth Proportional to 142,710.27, 196,980.71 and 86,125.29

Step by Step Solution

1. Step 1: Write the proportion equation
   142,710.27 : 196,980.71 = 86,125.29 : x
2. Step 2: Convert to fraction form
   142,710.27/196,980.71 = 86,125.29/x
3. Step 3: Cross multiply
   142,710.27x = 196,980.71 × 86,125.29
4. Step 4: Simplify right side
   142,710.27x = 16,965,020,342.53
5. Step 5: Solve for x
   x = 16,965,020,342.53/142,710.27
6. Step 6: Final answer
   x = 118,877.36