Finding the Fourth Proportional to 340,926.72, 511,389.81 and 91,608.72

Step by Step Solution

1. Step 1: Write the proportion equation
   340,926.72 : 511,389.81 = 91,608.72 : x
2. Step 2: Convert to fraction form
   340,926.72/511,389.81 = 91,608.72/x
3. Step 3: Cross multiply
   340,926.72x = 511,389.81 × 91,608.72
4. Step 4: Simplify right side
   340,926.72x = 46,847,765,915.14
5. Step 5: Solve for x
   x = 46,847,765,915.14/340,926.72
6. Step 6: Final answer
   x = 137,413.01