Finding the Fourth Proportional to 259,456.69, 388,900.72 and 101,511.55

Step by Step Solution

1. Step 1: Write the proportion equation
   259,456.69 : 388,900.72 = 101,511.55 : x
2. Step 2: Convert to fraction form
   259,456.69/388,900.72 = 101,511.55/x
3. Step 3: Cross multiply
   259,456.69x = 388,900.72 × 101,511.55
4. Step 4: Simplify right side
   259,456.69x = 39,477,914,883.32
5. Step 5: Solve for x
   x = 39,477,914,883.32/259,456.69
6. Step 6: Final answer
   x = 152,156.09