Finding the Fourth Proportional to 115,947.05, 160,019.82 and 64,968.08

Step by Step Solution

1. Step 1: Write the proportion equation
   115,947.05 : 160,019.82 = 64,968.08 : x
2. Step 2: Convert to fraction form
   115,947.05/160,019.82 = 64,968.08/x
3. Step 3: Cross multiply
   115,947.05x = 160,019.82 × 64,968.08
4. Step 4: Simplify right side
   115,947.05x = 10,396,179,667.25
5. Step 5: Solve for x
   x = 10,396,179,667.25/115,947.05
6. Step 6: Final answer
   x = 89,663.17