Finding the Fourth Proportional to 113,862.05, 155,990.30 and 109,604.07

Step by Step Solution

1. Step 1: Write the proportion equation
   113,862.05 : 155,990.30 = 109,604.07 : x
2. Step 2: Convert to fraction form
   113,862.05/155,990.30 = 109,604.07/x
3. Step 3: Cross multiply
   113,862.05x = 155,990.30 × 109,604.07
4. Step 4: Simplify right side
   113,862.05x = 17,097,171,760.52
5. Step 5: Solve for x
   x = 17,097,171,760.52/113,862.05
6. Step 6: Final answer
   x = 150,156.89