Finding the Fourth Proportional to 118,375.08, 163,361.54 and 64,665.10

Step by Step Solution

1. Step 1: Write the proportion equation
   118,375.08 : 163,361.54 = 64,665.10 : x
2. Step 2: Convert to fraction form
   118,375.08/163,361.54 = 64,665.10/x
3. Step 3: Cross multiply
   118,375.08x = 163,361.54 × 64,665.10
4. Step 4: Simplify right side
   118,375.08x = 10,563,790,320.25
5. Step 5: Solve for x
   x = 10,563,790,320.25/118,375.08
6. Step 6: Final answer
   x = 89,239.98