Finding the Fourth Proportional to 89,640.94, 134,399.16 and 39,693.82

Step by Step Solution

1. Step 1: Write the proportion equation
   89,640.94 : 134,399.16 = 39,693.82 : x
2. Step 2: Convert to fraction form
   89,640.94/134,399.16 = 39,693.82/x
3. Step 3: Cross multiply
   89,640.94x = 134,399.16 × 39,693.82
4. Step 4: Simplify right side
   89,640.94x = 5,334,816,065.19
5. Step 5: Solve for x
   x = 5,334,816,065.19/89,640.94
6. Step 6: Final answer
   x = 59,513.17