Finding the Fourth Proportional to 105,061.36, 145,009.56 and 60,375.28

Step by Step Solution

1. Step 1: Write the proportion equation
   105,061.36 : 145,009.56 = 60,375.28 : x
2. Step 2: Convert to fraction form
   105,061.36/145,009.56 = 60,375.28/x
3. Step 3: Cross multiply
   105,061.36x = 145,009.56 × 60,375.28
4. Step 4: Simplify right side
   105,061.36x = 8,754,992,787.68
5. Step 5: Solve for x
   x = 8,754,992,787.68/105,061.36
6. Step 6: Final answer
   x = 83,332.19