Finding the Fourth Proportional to 112,389.60, 154,781.90 and 109,940.16

Step by Step Solution

1. Step 1: Write the proportion equation
   112,389.60 : 154,781.90 = 109,940.16 : x
2. Step 2: Convert to fraction form
   112,389.60/154,781.90 = 109,940.16/x
3. Step 3: Cross multiply
   112,389.60x = 154,781.90 × 109,940.16
4. Step 4: Simplify right side
   112,389.60x = 17,016,746,851.10
5. Step 5: Solve for x
   x = 17,016,746,851.10/112,389.60
6. Step 6: Final answer
   x = 151,408.55