Finding the Fourth Proportional to 66,105.39, 91,162.91 and 43,404.33

Step by Step Solution

1. Step 1: Write the proportion equation
   66,105.39 : 91,162.91 = 43,404.33 : x
2. Step 2: Convert to fraction form
   66,105.39/91,162.91 = 43,404.33/x
3. Step 3: Cross multiply
   66,105.39x = 91,162.91 × 43,404.33
4. Step 4: Simplify right side
   66,105.39x = 3,956,864,812.38
5. Step 5: Solve for x
   x = 3,956,864,812.38/66,105.39
6. Step 6: Final answer
   x = 59,856.92