Finding the Fourth Proportional to 117,086.72, 161,603.52 and 79,373.12

Step by Step Solution

1. Step 1: Write the proportion equation
   117,086.72 : 161,603.52 = 79,373.12 : x
2. Step 2: Convert to fraction form
   117,086.72/161,603.52 = 79,373.12/x
3. Step 3: Cross multiply
   117,086.72x = 161,603.52 × 79,373.12
4. Step 4: Simplify right side
   117,086.72x = 12,826,975,585.38
5. Step 5: Solve for x
   x = 12,826,975,585.38/117,086.72
6. Step 6: Final answer
   x = 109,551.07