Finding the Fourth Proportional to 260,929.89, 391,419.27 and 83,394.63

Step by Step Solution

1. Step 1: Write the proportion equation
   260,929.89 : 391,419.27 = 83,394.63 : x
2. Step 2: Convert to fraction form
   260,929.89/391,419.27 = 83,394.63/x
3. Step 3: Cross multiply
   260,929.89x = 391,419.27 × 83,394.63
4. Step 4: Simplify right side
   260,929.89x = 32,642,265,196.52
5. Step 5: Solve for x
   x = 32,642,265,196.52/260,929.89
6. Step 6: Final answer
   x = 125,099.75