Finding the Fourth Proportional to 142,843.59, 197,085.15 and 89,137.26

Step by Step Solution

1. Step 1: Write the proportion equation
   142,843.59 : 197,085.15 = 89,137.26 : x
2. Step 2: Convert to fraction form
   142,843.59/197,085.15 = 89,137.26/x
3. Step 3: Cross multiply
   142,843.59x = 197,085.15 × 89,137.26
4. Step 4: Simplify right side
   142,843.59x = 17,567,630,257.69
5. Step 5: Solve for x
   x = 17,567,630,257.69/142,843.59
6. Step 6: Final answer
   x = 122,985.08