Finding the Fourth Proportional to 57,887.32, 79,814.46 and 48,919

Step by Step Solution

1. Step 1: Write the proportion equation
   57,887.32 : 79,814.46 = 48,919 : x
2. Step 2: Convert to fraction form
   57,887.32/79,814.46 = 48,919/x
3. Step 3: Cross multiply
   57,887.32x = 79,814.46 × 48,919
4. Step 4: Simplify right side
   57,887.32x = 3,904,443,568.74
5. Step 5: Solve for x
   x = 3,904,443,568.74/57,887.32
6. Step 6: Final answer
   x = 67,449.03