Finding the Fourth Proportional to 143,455, 197,967.90 and 83,839

Step by Step Solution

1. Step 1: Write the proportion equation
   143,455 : 197,967.90 = 83,839 : x
2. Step 2: Convert to fraction form
   143,455/197,967.90 = 83,839/x
3. Step 3: Cross multiply
   143,455x = 197,967.90 × 83,839
4. Step 4: Simplify right side
   143,455x = 16,597,430,768.10
5. Step 5: Solve for x
   x = 16,597,430,768.10/143,455
6. Step 6: Final answer
   x = 115,697.82