Finding the Fourth Proportional to 89,081.16, 133,435.82 and 53,429.42

Step by Step Solution

1. Step 1: Write the proportion equation
   89,081.16 : 133,435.82 = 53,429.42 : x
2. Step 2: Convert to fraction form
   89,081.16/133,435.82 = 53,429.42/x
3. Step 3: Cross multiply
   89,081.16x = 133,435.82 × 53,429.42
4. Step 4: Simplify right side
   89,081.16x = 7,129,398,469.82
5. Step 5: Solve for x
   x = 7,129,398,469.82/89,081.16
6. Step 6: Final answer
   x = 80,032.62