Finding the Fourth Proportional to 105,845.40, 146,074.32 and 69,973.20

Step by Step Solution

1. Step 1: Write the proportion equation
   105,845.40 : 146,074.32 = 69,973.20 : x
2. Step 2: Convert to fraction form
   105,845.40/146,074.32 = 69,973.20/x
3. Step 3: Cross multiply
   105,845.40x = 146,074.32 × 69,973.20
4. Step 4: Simplify right side
   105,845.40x = 10,221,287,608.22
5. Step 5: Solve for x
   x = 10,221,287,608.22/105,845.40
6. Step 6: Final answer
   x = 96,568.09