Finding the Fourth Proportional to 118,408.38, 163,403.37 and 64,693.38

Step by Step Solution

1. Step 1: Write the proportion equation
   118,408.38 : 163,403.37 = 64,693.38 : x
2. Step 2: Convert to fraction form
   118,408.38/163,403.37 = 64,693.38/x
3. Step 3: Cross multiply
   118,408.38x = 163,403.37 × 64,693.38
4. Step 4: Simplify right side
   118,408.38x = 10,571,116,308.69
5. Step 5: Solve for x
   x = 10,571,116,308.69/118,408.38
6. Step 6: Final answer
   x = 89,276.76