Finding the Fourth Proportional to 105,447.06, 145,365.56 and 75,179.83

Step by Step Solution

1. Step 1: Write the proportion equation
   105,447.06 : 145,365.56 = 75,179.83 : x
2. Step 2: Convert to fraction form
   105,447.06/145,365.56 = 75,179.83/x
3. Step 3: Cross multiply
   105,447.06x = 145,365.56 × 75,179.83
4. Step 4: Simplify right side
   105,447.06x = 10,928,558,728.53
5. Step 5: Solve for x
   x = 10,928,558,728.53/105,447.06
6. Step 6: Final answer
   x = 103,640.24