Finding the Fourth Proportional to 104,300.67, 155,109.21 and 100,979.19

Step by Step Solution

1. Step 1: Write the proportion equation
   104,300.67 : 155,109.21 = 100,979.19 : x
2. Step 2: Convert to fraction form
   104,300.67/155,109.21 = 100,979.19/x
3. Step 3: Cross multiply
   104,300.67x = 155,109.21 × 100,979.19
4. Step 4: Simplify right side
   104,300.67x = 15,662,802,387.34
5. Step 5: Solve for x
   x = 15,662,802,387.34/104,300.67
6. Step 6: Final answer
   x = 150,169.72