Finding the Fourth Proportional to 109,991.39, 151,709.69 and 100,945.89

Step by Step Solution

1. Step 1: Write the proportion equation
   109,991.39 : 151,709.69 = 100,945.89 : x
2. Step 2: Convert to fraction form
   109,991.39/151,709.69 = 100,945.89/x
3. Step 3: Cross multiply
   109,991.39x = 151,709.69 × 100,945.89
4. Step 4: Simplify right side
   109,991.39x = 15,314,469,173.94
5. Step 5: Solve for x
   x = 15,314,469,173.94/109,991.39
6. Step 6: Final answer
   x = 139,233.35