Finding the Fourth Proportional to 142,046.10, 212,923.35 and 82,851.30

Step by Step Solution

1. Step 1: Write the proportion equation
   142,046.10 : 212,923.35 = 82,851.30 : x
2. Step 2: Convert to fraction form
   142,046.10/212,923.35 = 82,851.30/x
3. Step 3: Cross multiply
   142,046.10x = 212,923.35 × 82,851.30
4. Step 4: Simplify right side
   142,046.10x = 17,640,976,347.86
5. Step 5: Solve for x
   x = 17,640,976,347.86/142,046.10
6. Step 6: Final answer
   x = 124,191.91