Finding the Fourth Proportional to 225,510.69, 311,086.77 and 139,442.16

Step by Step Solution

1. Step 1: Write the proportion equation
   225,510.69 : 311,086.77 = 139,442.16 : x
2. Step 2: Convert to fraction form
   225,510.69/311,086.77 = 139,442.16/x
3. Step 3: Cross multiply
   225,510.69x = 311,086.77 × 139,442.16
4. Step 4: Simplify right side
   225,510.69x = 43,378,611,156.22
5. Step 5: Solve for x
   x = 43,378,611,156.22/225,510.69
6. Step 6: Final answer
   x = 192,357.23