Finding the Fourth Proportional to 112,168.74, 154,477.89 and 109,719.30

Step by Step Solution

1. Step 1: Write the proportion equation
   112,168.74 : 154,477.89 = 109,719.30 : x
2. Step 2: Convert to fraction form
   112,168.74/154,477.89 = 109,719.30/x
3. Step 3: Cross multiply
   112,168.74x = 154,477.89 × 109,719.30
4. Step 4: Simplify right side
   112,168.74x = 16,949,205,956.28
5. Step 5: Solve for x
   x = 16,949,205,956.28/112,168.74
6. Step 6: Final answer
   x = 151,104.54