Finding the Fourth Proportional to 142,885.69, 197,137.24 and 89,201.79

Step by Step Solution

1. Step 1: Write the proportion equation
   142,885.69 : 197,137.24 = 89,201.79 : x
2. Step 2: Convert to fraction form
   142,885.69/197,137.24 = 89,201.79/x
3. Step 3: Cross multiply
   142,885.69x = 197,137.24 × 89,201.79
4. Step 4: Simplify right side
   142,885.69x = 17,584,994,460.66
5. Step 5: Solve for x
   x = 17,584,994,460.66/142,885.69
6. Step 6: Final answer
   x = 123,070.37