Finding the Fourth Proportional to 118,456.12, 163,469.05 and 64,741.12

Step by Step Solution

1. Step 1: Write the proportion equation
   118,456.12 : 163,469.05 = 64,741.12 : x
2. Step 2: Convert to fraction form
   118,456.12/163,469.05 = 64,741.12/x
3. Step 3: Cross multiply
   118,456.12x = 163,469.05 × 64,741.12
4. Step 4: Simplify right side
   118,456.12x = 10,583,168,241.29
5. Step 5: Solve for x
   x = 10,583,168,241.29/118,456.12
6. Step 6: Final answer
   x = 89,342.52