Finding the Fourth Proportional to 143,802.29, 198,447.82 and 83,408.69

Step by Step Solution

1. Step 1: Write the proportion equation
   143,802.29 : 198,447.82 = 83,408.69 : x
2. Step 2: Convert to fraction form
   143,802.29/198,447.82 = 83,408.69/x
3. Step 3: Cross multiply
   143,802.29x = 198,447.82 × 83,408.69
4. Step 4: Simplify right side
   143,802.29x = 16,552,271,498.80
5. Step 5: Solve for x
   x = 16,552,271,498.80/143,802.29
6. Step 6: Final answer
   x = 115,104.37