Finding the Fourth Proportional to 104,142.72, 143,609.42 and 89,085.22

Step by Step Solution

1. Step 1: Write the proportion equation
   104,142.72 : 143,609.42 = 89,085.22 : x
2. Step 2: Convert to fraction form
   104,142.72/143,609.42 = 89,085.22/x
3. Step 3: Cross multiply
   104,142.72x = 143,609.42 × 89,085.22
4. Step 4: Simplify right side
   104,142.72x = 12,793,476,774.77
5. Step 5: Solve for x
   x = 12,793,476,774.77/104,142.72
6. Step 6: Final answer
   x = 122,845.62