Finding the Fourth Proportional to 259,385.79, 389,118.91 and 109,626.71

Step by Step Solution

1. Step 1: Write the proportion equation
   259,385.79 : 389,118.91 = 109,626.71 : x
2. Step 2: Convert to fraction form
   259,385.79/389,118.91 = 109,626.71/x
3. Step 3: Cross multiply
   259,385.79x = 389,118.91 × 109,626.71
4. Step 4: Simplify right side
   259,385.79x = 42,657,825,552.72
5. Step 5: Solve for x
   x = 42,657,825,552.72/259,385.79
6. Step 6: Final answer
   x = 164,457.07