Finding the Fourth Proportional to 118,501.16, 163,531.20 and 64,786.22

Step by Step Solution

1. Step 1: Write the proportion equation
   118,501.16 : 163,531.20 = 64,786.22 : x
2. Step 2: Convert to fraction form
   118,501.16/163,531.20 = 64,786.22/x
3. Step 3: Cross multiply
   118,501.16x = 163,531.20 × 64,786.22
4. Step 4: Simplify right side
   118,501.16x = 10,594,568,300.06
5. Step 5: Solve for x
   x = 10,594,568,300.06/118,501.16
6. Step 6: Final answer
   x = 89,404.76