Finding the Fourth Proportional to 112,581.62, 169,065.82 and 99,959.80

Step by Step Solution

1. Step 1: Write the proportion equation
   112,581.62 : 169,065.82 = 99,959.80 : x
2. Step 2: Convert to fraction form
   112,581.62/169,065.82 = 99,959.80/x
3. Step 3: Cross multiply
   112,581.62x = 169,065.82 × 99,959.80
4. Step 4: Simplify right side
   112,581.62x = 16,899,785,554.04
5. Step 5: Solve for x
   x = 16,899,785,554.04/112,581.62
6. Step 6: Final answer
   x = 150,111.41