Finding the Fourth Proportional to 260,196.45, 390,295.89 and 110,399.10

Step by Step Solution

1. Step 1: Write the proportion equation
   260,196.45 : 390,295.89 = 110,399.10 : x
2. Step 2: Convert to fraction form
   260,196.45/390,295.89 = 110,399.10/x
3. Step 3: Cross multiply
   260,196.45x = 390,295.89 × 110,399.10
4. Step 4: Simplify right side
   260,196.45x = 43,088,314,989.70
5. Step 5: Solve for x
   x = 43,088,314,989.70/260,196.45
6. Step 6: Final answer
   x = 165,599.17