Finding the Fourth Proportional to 117,078.72, 161,592.48 and 79,365.12

Step by Step Solution

1. Step 1: Write the proportion equation
   117,078.72 : 161,592.48 = 79,365.12 : x
2. Step 2: Convert to fraction form
   117,078.72/161,592.48 = 79,365.12/x
3. Step 3: Cross multiply
   117,078.72x = 161,592.48 × 79,365.12
4. Step 4: Simplify right side
   117,078.72x = 12,824,806,566.30
5. Step 5: Solve for x
   x = 12,824,806,566.30/117,078.72
6. Step 6: Final answer
   x = 109,540.03