Finding the Fourth Proportional to 118,728.45, 163,870.02 and 109,153.17

Step by Step Solution

1. Step 1: Write the proportion equation
   118,728.45 : 163,870.02 = 109,153.17 : x
2. Step 2: Convert to fraction form
   118,728.45/163,870.02 = 109,153.17/x
3. Step 3: Cross multiply
   118,728.45x = 163,870.02 × 109,153.17
4. Step 4: Simplify right side
   118,728.45x = 17,886,932,150.96
5. Step 5: Solve for x
   x = 17,886,932,150.96/118,728.45
6. Step 6: Final answer
   x = 150,654.14