Finding the Fourth Proportional to 118,500.23, 163,530.88 and 64,785.23

Step by Step Solution

1. Step 1: Write the proportion equation
   118,500.23 : 163,530.88 = 64,785.23 : x
2. Step 2: Convert to fraction form
   118,500.23/163,530.88 = 64,785.23/x
3. Step 3: Cross multiply
   118,500.23x = 163,530.88 × 64,785.23
4. Step 4: Simplify right side
   118,500.23x = 10,594,386,590.80
5. Step 5: Solve for x
   x = 10,594,386,590.80/118,500.23
6. Step 6: Final answer
   x = 89,403.93