Finding the Fourth Proportional to 118,346.69, 163,321.31 and 64,631.27

Step by Step Solution

1. Step 1: Write the proportion equation
   118,346.69 : 163,321.31 = 64,631.27 : x
2. Step 2: Convert to fraction form
   118,346.69/163,321.31 = 64,631.27/x
3. Step 3: Cross multiply
   118,346.69x = 163,321.31 × 64,631.27
4. Step 4: Simplify right side
   118,346.69x = 10,555,664,253.25
5. Step 5: Solve for x
   x = 10,555,664,253.25/118,346.69
6. Step 6: Final answer
   x = 89,192.73