Finding the Fourth Proportional to 104,635.33, 144,140.42 and 75,870.45

Step by Step Solution

1. Step 1: Write the proportion equation
   104,635.33 : 144,140.42 = 75,870.45 : x
2. Step 2: Convert to fraction form
   104,635.33/144,140.42 = 75,870.45/x
3. Step 3: Cross multiply
   104,635.33x = 144,140.42 × 75,870.45
4. Step 4: Simplify right side
   104,635.33x = 10,935,998,718.27
5. Step 5: Solve for x
   x = 10,935,998,718.27/104,635.33
6. Step 6: Final answer
   x = 104,515.36