Finding the Fourth Proportional to 117,874.15, 162,669.86 and 72,578.27

Step by Step Solution

1. Step 1: Write the proportion equation
   117,874.15 : 162,669.86 = 72,578.27 : x
2. Step 2: Convert to fraction form
   117,874.15/162,669.86 = 72,578.27/x
3. Step 3: Cross multiply
   117,874.15x = 162,669.86 × 72,578.27
4. Step 4: Simplify right side
   117,874.15x = 11,806,297,019.94
5. Step 5: Solve for x
   x = 11,806,297,019.94/117,874.15
6. Step 6: Final answer
   x = 100,160.19