Finding the Fourth Proportional to 51,250.68, 76,870.31 and 13,814.48

Step by Step Solution

1. Step 1: Write the proportion equation
   51,250.68 : 76,870.31 = 13,814.48 : x
2. Step 2: Convert to fraction form
   51,250.68/76,870.31 = 13,814.48/x
3. Step 3: Cross multiply
   51,250.68x = 76,870.31 × 13,814.48
4. Step 4: Simplify right side
   51,250.68x = 1,061,923,483.19
5. Step 5: Solve for x
   x = 1,061,923,483.19/51,250.68
6. Step 6: Final answer
   x = 20,720.18