Finding the Fourth Proportional to 139,108.15, 191,759.94 and 108,840.92

Step by Step Solution

1. Step 1: Write the proportion equation
   139,108.15 : 191,759.94 = 108,840.92 : x
2. Step 2: Convert to fraction form
   139,108.15/191,759.94 = 108,840.92/x
3. Step 3: Cross multiply
   139,108.15x = 191,759.94 × 108,840.92
4. Step 4: Simplify right side
   139,108.15x = 20,871,327,329.95
5. Step 5: Solve for x
   x = 20,871,327,329.95/139,108.15
6. Step 6: Final answer
   x = 150,036.70