Finding the Fourth Proportional to 144,131.31, 198,918.09 and 83,704.50

Step by Step Solution

1. Step 1: Write the proportion equation
   144,131.31 : 198,918.09 = 83,704.50 : x
2. Step 2: Convert to fraction form
   144,131.31/198,918.09 = 83,704.50/x
3. Step 3: Cross multiply
   144,131.31x = 198,918.09 × 83,704.50
4. Step 4: Simplify right side
   144,131.31x = 16,650,339,264.41
5. Step 5: Solve for x
   x = 16,650,339,264.41/144,131.31
6. Step 6: Final answer
   x = 115,522.01