Finding the Fourth Proportional to 259,085.03, 388,460.63 and 109,285.25

Step by Step Solution

1. Step 1: Write the proportion equation
   259,085.03 : 388,460.63 = 109,285.25 : x
2. Step 2: Convert to fraction form
   259,085.03/388,460.63 = 109,285.25/x
3. Step 3: Cross multiply
   259,085.03x = 388,460.63 × 109,285.25
4. Step 4: Simplify right side
   259,085.03x = 42,453,014,575.98
5. Step 5: Solve for x
   x = 42,453,014,575.98/259,085.03
6. Step 6: Final answer
   x = 163,857.46