Finding the Fourth Proportional to 104,142.71, 143,609.43 and 89,085.22

Step by Step Solution

1. Step 1: Write the proportion equation
   104,142.71 : 143,609.43 = 89,085.22 : x
2. Step 2: Convert to fraction form
   104,142.71/143,609.43 = 89,085.22/x
3. Step 3: Cross multiply
   104,142.71x = 143,609.43 × 89,085.22
4. Step 4: Simplify right side
   104,142.71x = 12,793,477,665.62
5. Step 5: Solve for x
   x = 12,793,477,665.62/104,142.71
6. Step 6: Final answer
   x = 122,845.64