Finding the Fourth Proportional to 117,205.30, 161,743.71 and 63,490.15

Step by Step Solution

1. Step 1: Write the proportion equation
   117,205.30 : 161,743.71 = 63,490.15 : x
2. Step 2: Convert to fraction form
   117,205.30/161,743.71 = 63,490.15/x
3. Step 3: Cross multiply
   117,205.30x = 161,743.71 × 63,490.15
4. Step 4: Simplify right side
   117,205.30x = 10,269,132,409.46
5. Step 5: Solve for x
   x = 10,269,132,409.46/117,205.30
6. Step 6: Final answer
   x = 87,616.62