Finding the Fourth Proportional to 118,649.03, 163,735.72 and 64,934.01

Step by Step Solution

1. Step 1: Write the proportion equation
   118,649.03 : 163,735.72 = 64,934.01 : x
2. Step 2: Convert to fraction form
   118,649.03/163,735.72 = 64,934.01/x
3. Step 3: Cross multiply
   118,649.03x = 163,735.72 × 64,934.01
4. Step 4: Simplify right side
   118,649.03x = 10,632,016,717.50
5. Step 5: Solve for x
   x = 10,632,016,717.50/118,649.03
6. Step 6: Final answer
   x = 89,608.97