Finding the Fourth Proportional to 105,422.22, 145,571.31 and 75,299.94

Step by Step Solution

1. Step 1: Write the proportion equation
   105,422.22 : 145,571.31 = 75,299.94 : x
2. Step 2: Convert to fraction form
   105,422.22/145,571.31 = 75,299.94/x
3. Step 3: Cross multiply
   105,422.22x = 145,571.31 × 75,299.94
4. Step 4: Simplify right side
   105,422.22x = 10,961,510,908.72
5. Step 5: Solve for x
   x = 10,961,510,908.72/105,422.22
6. Step 6: Final answer
   x = 103,977.23