Finding the Fourth Proportional to 139,168.16, 208,661.52 and 59,164.64

Step by Step Solution

1. Step 1: Write the proportion equation
   139,168.16 : 208,661.52 = 59,164.64 : x
2. Step 2: Convert to fraction form
   139,168.16/208,661.52 = 59,164.64/x
3. Step 3: Cross multiply
   139,168.16x = 208,661.52 × 59,164.64
4. Step 4: Simplify right side
   139,168.16x = 12,345,383,712.65
5. Step 5: Solve for x
   x = 12,345,383,712.65/139,168.16
6. Step 6: Final answer
   x = 88,708.39