Finding the Fourth Proportional to 105,979.47, 146,151.45 and 69,616.74

Step by Step Solution

1. Step 1: Write the proportion equation
   105,979.47 : 146,151.45 = 69,616.74 : x
2. Step 2: Convert to fraction form
   105,979.47/146,151.45 = 69,616.74/x
3. Step 3: Cross multiply
   105,979.47x = 146,151.45 × 69,616.74
4. Step 4: Simplify right side
   105,979.47x = 10,174,587,495.27
5. Step 5: Solve for x
   x = 10,174,587,495.27/105,979.47
6. Step 6: Final answer
   x = 96,005.27