Finding the Fourth Proportional to 117,105.48, 161,605.50 and 63,390.93

Step by Step Solution

1. Step 1: Write the proportion equation
   117,105.48 : 161,605.50 = 63,390.93 : x
2. Step 2: Convert to fraction form
   117,105.48/161,605.50 = 63,390.93/x
3. Step 3: Cross multiply
   117,105.48x = 161,605.50 × 63,390.93
4. Step 4: Simplify right side
   117,105.48x = 10,244,322,938.12
5. Step 5: Solve for x
   x = 10,244,322,938.12/117,105.48
6. Step 6: Final answer
   x = 87,479.45