Finding the Fourth Proportional to 67,851.47, 101,749.86 and 20,451.89

Step by Step Solution

1. Step 1: Write the proportion equation
   67,851.47 : 101,749.86 = 20,451.89 : x
2. Step 2: Convert to fraction form
   67,851.47/101,749.86 = 20,451.89/x
3. Step 3: Cross multiply
   67,851.47x = 101,749.86 × 20,451.89
4. Step 4: Simplify right side
   67,851.47x = 2,080,977,198.61
5. Step 5: Solve for x
   x = 2,080,977,198.61/67,851.47
6. Step 6: Final answer
   x = 30,669.60