Finding the Fourth Proportional to 57,372.45, 79,173.83 and 31,878.71

Step by Step Solution

1. Step 1: Write the proportion equation
   57,372.45 : 79,173.83 = 31,878.71 : x
2. Step 2: Convert to fraction form
   57,372.45/79,173.83 = 31,878.71/x
3. Step 3: Cross multiply
   57,372.45x = 79,173.83 × 31,878.71
4. Step 4: Simplify right side
   57,372.45x = 2,523,959,406.77
5. Step 5: Solve for x
   x = 2,523,959,406.77/57,372.45
6. Step 6: Final answer
   x = 43,992.53