Finding the Fourth Proportional to 118,545.48, 163,587.72 and 64,832.28

Step by Step Solution

1. Step 1: Write the proportion equation
   118,545.48 : 163,587.72 = 64,832.28 : x
2. Step 2: Convert to fraction form
   118,545.48/163,587.72 = 64,832.28/x
3. Step 3: Cross multiply
   118,545.48x = 163,587.72 × 64,832.28
4. Step 4: Simplify right side
   118,545.48x = 10,605,764,867.60
5. Step 5: Solve for x
   x = 10,605,764,867.60/118,545.48
6. Step 6: Final answer
   x = 89,465.79