Finding the Fourth Proportional to 118,195, 163,109.50 and 64,481.15

Step by Step Solution

1. Step 1: Write the proportion equation
   118,195 : 163,109.50 = 64,481.15 : x
2. Step 2: Convert to fraction form
   118,195/163,109.50 = 64,481.15/x
3. Step 3: Cross multiply
   118,195x = 163,109.50 × 64,481.15
4. Step 4: Simplify right side
   118,195x = 10,517,487,813.52
5. Step 5: Solve for x
   x = 10,517,487,813.52/118,195
6. Step 6: Final answer
   x = 88,984.20