Finding the Fourth Proportional to 92,245.42, 138,411.87 and 54,879.31

Step by Step Solution

1. Step 1: Write the proportion equation
   92,245.42 : 138,411.87 = 54,879.31 : x
2. Step 2: Convert to fraction form
   92,245.42/138,411.87 = 54,879.31/x
3. Step 3: Cross multiply
   92,245.42x = 138,411.87 × 54,879.31
4. Step 4: Simplify right side
   92,245.42x = 7,595,947,921.41
5. Step 5: Solve for x
   x = 7,595,947,921.41/92,245.42
6. Step 6: Final answer
   x = 82,344.99