Finding the Fourth Proportional to 213,736.84, 294,738.42 and 142,128.52

Step by Step Solution

1. Step 1: Write the proportion equation
   213,736.84 : 294,738.42 = 142,128.52 : x
2. Step 2: Convert to fraction form
   213,736.84/294,738.42 = 142,128.52/x
3. Step 3: Cross multiply
   213,736.84x = 294,738.42 × 142,128.52
4. Step 4: Simplify right side
   213,736.84x = 41,890,735,421.74
5. Step 5: Solve for x
   x = 41,890,735,421.74/213,736.84
6. Step 6: Final answer
   x = 195,992.12