Finding the Fourth Proportional to 259,345.59, 388,924.78 and 109,597.45

Step by Step Solution

1. Step 1: Write the proportion equation
   259,345.59 : 388,924.78 = 109,597.45 : x
2. Step 2: Convert to fraction form
   259,345.59/388,924.78 = 109,597.45/x
3. Step 3: Cross multiply
   259,345.59x = 388,924.78 × 109,597.45
4. Step 4: Simplify right side
   259,345.59x = 42,625,164,129.81
5. Step 5: Solve for x
   x = 42,625,164,129.81/259,345.59
6. Step 6: Final answer
   x = 164,356.62