Finding the Fourth Proportional to 118,353.02, 163,326.33 and 64,638.05

Step by Step Solution

1. Step 1: Write the proportion equation
   118,353.02 : 163,326.33 = 64,638.05 : x
2. Step 2: Convert to fraction form
   118,353.02/163,326.33 = 64,638.05/x
3. Step 3: Cross multiply
   118,353.02x = 163,326.33 × 64,638.05
4. Step 4: Simplify right side
   118,353.02x = 10,557,094,668.22
5. Step 5: Solve for x
   x = 10,557,094,668.22/118,353.02
6. Step 6: Final answer
   x = 89,200.05