Finding the Fourth Proportional to 105,448.06, 145,366.94 and 75,180.83

Step by Step Solution

1. Step 1: Write the proportion equation
   105,448.06 : 145,366.94 = 75,180.83 : x
2. Step 2: Convert to fraction form
   105,448.06/145,366.94 = 75,180.83/x
3. Step 3: Cross multiply
   105,448.06x = 145,366.94 × 75,180.83
4. Step 4: Simplify right side
   105,448.06x = 10,928,807,203.76
5. Step 5: Solve for x
   x = 10,928,807,203.76/105,448.06
6. Step 6: Final answer
   x = 103,641.61