Finding the Fourth Proportional to 51,200.10, 76,734.54 and 39,488.72

Step by Step Solution

1. Step 1: Write the proportion equation
   51,200.10 : 76,734.54 = 39,488.72 : x
2. Step 2: Convert to fraction form
   51,200.10/76,734.54 = 39,488.72/x
3. Step 3: Cross multiply
   51,200.10x = 76,734.54 × 39,488.72
4. Step 4: Simplify right side
   51,200.10x = 3,030,148,380.72
5. Step 5: Solve for x
   x = 3,030,148,380.72/51,200.10
6. Step 6: Final answer
   x = 59,182.47