Finding the Fourth Proportional to 118,479.88, 163,506.63 and 64,768.54

Step by Step Solution

1. Step 1: Write the proportion equation
   118,479.88 : 163,506.63 = 64,768.54 : x
2. Step 2: Convert to fraction form
   118,479.88/163,506.63 = 64,768.54/x
3. Step 3: Cross multiply
   118,479.88x = 163,506.63 × 64,768.54
4. Step 4: Simplify right side
   118,479.88x = 10,590,085,705.42
5. Step 5: Solve for x
   x = 10,590,085,705.42/118,479.88
6. Step 6: Final answer
   x = 89,382.99