Finding the Fourth Proportional to 259,978.76, 389,968.22 and 93,766.76

Step by Step Solution

1. Step 1: Write the proportion equation
   259,978.76 : 389,968.22 = 93,766.76 : x
2. Step 2: Convert to fraction form
   259,978.76/389,968.22 = 93,766.76/x
3. Step 3: Cross multiply
   259,978.76x = 389,968.22 × 93,766.76
4. Step 4: Simplify right side
   259,978.76x = 36,566,056,492.37
5. Step 5: Solve for x
   x = 36,566,056,492.37/259,978.76
6. Step 6: Final answer
   x = 140,650.17