Finding the Fourth Proportional to 236,824.72, 326,822.82 and 129,401.39

Step by Step Solution

1. Step 1: Write the proportion equation
   236,824.72 : 326,822.82 = 129,401.39 : x
2. Step 2: Convert to fraction form
   236,824.72/326,822.82 = 129,401.39/x
3. Step 3: Cross multiply
   236,824.72x = 326,822.82 × 129,401.39
4. Step 4: Simplify right side
   236,824.72x = 42,291,327,191.72
5. Step 5: Solve for x
   x = 42,291,327,191.72/236,824.72
6. Step 6: Final answer
   x = 178,576.49