Finding the Fourth Proportional to 192,128.78, 265,136.69 and 111,576.09

Step by Step Solution

1. Step 1: Write the proportion equation
   192,128.78 : 265,136.69 = 111,576.09 : x
2. Step 2: Convert to fraction form
   192,128.78/265,136.69 = 111,576.09/x
3. Step 3: Cross multiply
   192,128.78x = 265,136.69 × 111,576.09
4. Step 4: Simplify right side
   192,128.78x = 29,582,914,627.86
5. Step 5: Solve for x
   x = 29,582,914,627.86/192,128.78
6. Step 6: Final answer
   x = 153,974.41