Finding the Fourth Proportional to 105,600.79, 158,007.48 and 104,419.81

Step by Step Solution

1. Step 1: Write the proportion equation
   105,600.79 : 158,007.48 = 104,419.81 : x
2. Step 2: Convert to fraction form
   105,600.79/158,007.48 = 104,419.81/x
3. Step 3: Cross multiply
   105,600.79x = 158,007.48 × 104,419.81
4. Step 4: Simplify right side
   105,600.79x = 16,499,111,040.18
5. Step 5: Solve for x
   x = 16,499,111,040.18/105,600.79
6. Step 6: Final answer
   x = 156,240.41