Finding the Fourth Proportional to 259,986.72, 389,980.20 and 93,774.72

Step by Step Solution

1. Step 1: Write the proportion equation
   259,986.72 : 389,980.20 = 93,774.72 : x
2. Step 2: Convert to fraction form
   259,986.72/389,980.20 = 93,774.72/x
3. Step 3: Cross multiply
   259,986.72x = 389,980.20 × 93,774.72
4. Step 4: Simplify right side
   259,986.72x = 36,570,284,060.54
5. Step 5: Solve for x
   x = 36,570,284,060.54/259,986.72
6. Step 6: Final answer
   x = 140,662.12