Finding the Fourth Proportional to 259,002.55, 388,556.56 and 109,243.40

Step by Step Solution

1. Step 1: Write the proportion equation
   259,002.55 : 388,556.56 = 109,243.40 : x
2. Step 2: Convert to fraction form
   259,002.55/388,556.56 = 109,243.40/x
3. Step 3: Cross multiply
   259,002.55x = 388,556.56 × 109,243.40
4. Step 4: Simplify right side
   259,002.55x = 42,447,237,900.48
5. Step 5: Solve for x
   x = 42,447,237,900.48/259,002.55
6. Step 6: Final answer
   x = 163,887.34