Finding the Fourth Proportional to 155,087.48, 214,128.78 and 104,177.72

Step by Step Solution

1. Step 1: Write the proportion equation
   155,087.48 : 214,128.78 = 104,177.72 : x
2. Step 2: Convert to fraction form
   155,087.48/214,128.78 = 104,177.72/x
3. Step 3: Cross multiply
   155,087.48x = 214,128.78 × 104,177.72
4. Step 4: Simplify right side
   155,087.48x = 22,307,448,086.78
5. Step 5: Solve for x
   x = 22,307,448,086.78/155,087.48
6. Step 6: Final answer
   x = 143,837.84