Finding the Fourth Proportional to 53,860.47, 80,796.24 and 20,608.50

Step by Step Solution

1. Step 1: Write the proportion equation
   53,860.47 : 80,796.24 = 20,608.50 : x
2. Step 2: Convert to fraction form
   53,860.47/80,796.24 = 20,608.50/x
3. Step 3: Cross multiply
   53,860.47x = 80,796.24 × 20,608.50
4. Step 4: Simplify right side
   53,860.47x = 1,665,089,312.04
5. Step 5: Solve for x
   x = 1,665,089,312.04/53,860.47
6. Step 6: Final answer
   x = 30,914.87