Finding the Fourth Proportional to 117,661.10, 162,375.89 and 72,365.69

Step by Step Solution

1. Step 1: Write the proportion equation
   117,661.10 : 162,375.89 = 72,365.69 : x
2. Step 2: Convert to fraction form
   117,661.10/162,375.89 = 72,365.69/x
3. Step 3: Cross multiply
   117,661.10x = 162,375.89 × 72,365.69
4. Step 4: Simplify right side
   117,661.10x = 11,750,442,145.51
5. Step 5: Solve for x
   x = 11,750,442,145.51/117,661.10
6. Step 6: Final answer
   x = 99,866.84