Finding the Fourth Proportional to 89,186.97, 123,081.90 and 53,370.12

Step by Step Solution

1. Step 1: Write the proportion equation
   89,186.97 : 123,081.90 = 53,370.12 : x
2. Step 2: Convert to fraction form
   89,186.97/123,081.90 = 53,370.12/x
3. Step 3: Cross multiply
   89,186.97x = 123,081.90 × 53,370.12
4. Step 4: Simplify right side
   89,186.97x = 6,568,895,772.83
5. Step 5: Solve for x
   x = 6,568,895,772.83/89,186.97
6. Step 6: Final answer
   x = 73,653.09