Finding the Fourth Proportional to 117,150.72, 161,661.60 and 69,408.48

Step by Step Solution

1. Step 1: Write the proportion equation
   117,150.72 : 161,661.60 = 69,408.48 : x
2. Step 2: Convert to fraction form
   117,150.72/161,661.60 = 69,408.48/x
3. Step 3: Cross multiply
   117,150.72x = 161,661.60 × 69,408.48
4. Step 4: Simplify right side
   117,150.72x = 11,220,685,930.37
5. Step 5: Solve for x
   x = 11,220,685,930.37/117,150.72
6. Step 6: Final answer
   x = 95,779.91