Finding the Fourth Proportional to 30,787.98, 42,459.03 and 23,100.54

Step by Step Solution

1. Step 1: Write the proportion equation
   30,787.98 : 42,459.03 = 23,100.54 : x
2. Step 2: Convert to fraction form
   30,787.98/42,459.03 = 23,100.54/x
3. Step 3: Cross multiply
   30,787.98x = 42,459.03 × 23,100.54
4. Step 4: Simplify right side
   30,787.98x = 980,826,520.88
5. Step 5: Solve for x
   x = 980,826,520.88/30,787.98
6. Step 6: Final answer
   x = 31,857.45