Finding the Fourth Proportional to 112,090.16, 154,369.50 and 109,640.72

Step by Step Solution

1. Step 1: Write the proportion equation
   112,090.16 : 154,369.50 = 109,640.72 : x
2. Step 2: Convert to fraction form
   112,090.16/154,369.50 = 109,640.72/x
3. Step 3: Cross multiply
   112,090.16x = 154,369.50 × 109,640.72
4. Step 4: Simplify right side
   112,090.16x = 16,925,183,100.81
5. Step 5: Solve for x
   x = 16,925,183,100.81/112,090.16
6. Step 6: Final answer
   x = 150,996.15