Finding the Fourth Proportional to 118,257.86, 163,196.30 and 64,544.06

Step by Step Solution

1. Step 1: Write the proportion equation
   118,257.86 : 163,196.30 = 64,544.06 : x
2. Step 2: Convert to fraction form
   118,257.86/163,196.30 = 64,544.06/x
3. Step 3: Cross multiply
   118,257.86x = 163,196.30 × 64,544.06
4. Step 4: Simplify right side
   118,257.86x = 10,533,352,348.33
5. Step 5: Solve for x
   x = 10,533,352,348.33/118,257.86
6. Step 6: Final answer
   x = 89,071.05