Finding the Fourth Proportional to 53,860.79, 80,796.72 and 20,608.82

Step by Step Solution

1. Step 1: Write the proportion equation
   53,860.79 : 80,796.72 = 20,608.82 : x
2. Step 2: Convert to fraction form
   53,860.79/80,796.72 = 20,608.82/x
3. Step 3: Cross multiply
   53,860.79x = 80,796.72 × 20,608.82
4. Step 4: Simplify right side
   53,860.79x = 1,665,124,655.09
5. Step 5: Solve for x
   x = 1,665,124,655.09/53,860.79
6. Step 6: Final answer
   x = 30,915.34