Finding the Fourth Proportional to 209,443.31, 289,033.02 and 113,950.69

Step by Step Solution

1. Step 1: Write the proportion equation
   209,443.31 : 289,033.02 = 113,950.69 : x
2. Step 2: Convert to fraction form
   209,443.31/289,033.02 = 113,950.69/x
3. Step 3: Cross multiply
   209,443.31x = 289,033.02 × 113,950.69
4. Step 4: Simplify right side
   209,443.31x = 32,935,512,061.78
5. Step 5: Solve for x
   x = 32,935,512,061.78/209,443.31
6. Step 6: Final answer
   x = 157,252.63