Finding the Fourth Proportional to 139,832.42, 193,041.71 and 108,718.67

Step by Step Solution

1. Step 1: Write the proportion equation
   139,832.42 : 193,041.71 = 108,718.67 : x
2. Step 2: Convert to fraction form
   139,832.42/193,041.71 = 108,718.67/x
3. Step 3: Cross multiply
   139,832.42x = 193,041.71 × 108,718.67
4. Step 4: Simplify right side
   139,832.42x = 20,987,238,413.86
5. Step 5: Solve for x
   x = 20,987,238,413.86/139,832.42
6. Step 6: Final answer
   x = 150,088.50