Finding the Fourth Proportional to 112,579.69, 169,062.72 and 99,957.97

Step by Step Solution

1. Step 1: Write the proportion equation
   112,579.69 : 169,062.72 = 99,957.97 : x
2. Step 2: Convert to fraction form
   112,579.69/169,062.72 = 99,957.97/x
3. Step 3: Cross multiply
   112,579.69x = 169,062.72 × 99,957.97
4. Step 4: Simplify right side
   112,579.69x = 16,899,166,293.88
5. Step 5: Solve for x
   x = 16,899,166,293.88/112,579.69
6. Step 6: Final answer
   x = 150,108.48