Finding the Fourth Proportional to 143,571, 198,127.98 and 83,955

Step by Step Solution

1. Step 1: Write the proportion equation
   143,571 : 198,127.98 = 83,955 : x
2. Step 2: Convert to fraction form
   143,571/198,127.98 = 83,955/x
3. Step 3: Cross multiply
   143,571x = 198,127.98 × 83,955
4. Step 4: Simplify right side
   143,571x = 16,633,834,560.90
5. Step 5: Solve for x
   x = 16,633,834,560.90/143,571
6. Step 6: Final answer
   x = 115,857.90