Finding the Fourth Proportional to 118,578.42, 163,635.93 and 64,863.27

Step by Step Solution

1. Step 1: Write the proportion equation
   118,578.42 : 163,635.93 = 64,863.27 : x
2. Step 2: Convert to fraction form
   118,578.42/163,635.93 = 64,863.27/x
3. Step 3: Cross multiply
   118,578.42x = 163,635.93 × 64,863.27
4. Step 4: Simplify right side
   118,578.42x = 10,613,961,509.29
5. Step 5: Solve for x
   x = 10,613,961,509.29/118,578.42
6. Step 6: Final answer
   x = 89,510.06