Finding the Fourth Proportional to 260,109.89, 390,164.83 and 73,121.39

Step by Step Solution

1. Step 1: Write the proportion equation
   260,109.89 : 390,164.83 = 73,121.39 : x
2. Step 2: Convert to fraction form
   260,109.89/390,164.83 = 73,121.39/x
3. Step 3: Cross multiply
   260,109.89x = 390,164.83 × 73,121.39
4. Step 4: Simplify right side
   260,109.89x = 28,529,394,698.71
5. Step 5: Solve for x
   x = 28,529,394,698.71/260,109.89
6. Step 6: Final answer
   x = 109,682.08