Finding the Fourth Proportional to 236,897.99, 355,383.90 and 142,105.89

Step by Step Solution

1. Step 1: Write the proportion equation
   236,897.99 : 355,383.90 = 142,105.89 : x
2. Step 2: Convert to fraction form
   236,897.99/355,383.90 = 142,105.89/x
3. Step 3: Cross multiply
   236,897.99x = 355,383.90 × 142,105.89
4. Step 4: Simplify right side
   236,897.99x = 50,502,145,401.17
5. Step 5: Solve for x
   x = 50,502,145,401.17/236,897.99
6. Step 6: Final answer
   x = 213,180.98