Finding the Fourth Proportional to 89,958.69, 135,020.34 and 45,616.05

Step by Step Solution

1. Step 1: Write the proportion equation
   89,958.69 : 135,020.34 = 45,616.05 : x
2. Step 2: Convert to fraction form
   89,958.69/135,020.34 = 45,616.05/x
3. Step 3: Cross multiply
   89,958.69x = 135,020.34 × 45,616.05
4. Step 4: Simplify right side
   89,958.69x = 6,159,094,580.46
5. Step 5: Solve for x
   x = 6,159,094,580.46/89,958.69
6. Step 6: Final answer
   x = 68,465.81