Finding the Fourth Proportional to 118,640.45, 163,723.83 and 64,925.49

Step by Step Solution

1. Step 1: Write the proportion equation
   118,640.45 : 163,723.83 = 64,925.49 : x
2. Step 2: Convert to fraction form
   118,640.45/163,723.83 = 64,925.49/x
3. Step 3: Cross multiply
   118,640.45x = 163,723.83 × 64,925.49
4. Step 4: Simplify right side
   118,640.45x = 10,629,849,562.80
5. Step 5: Solve for x
   x = 10,629,849,562.80/118,640.45
6. Step 6: Final answer
   x = 89,597.18