Finding the Fourth Proportional to 51,788.48, 71,440.08 and 42,782.72

Step by Step Solution

1. Step 1: Write the proportion equation
   51,788.48 : 71,440.08 = 42,782.72 : x
2. Step 2: Convert to fraction form
   51,788.48/71,440.08 = 42,782.72/x
3. Step 3: Cross multiply
   51,788.48x = 71,440.08 × 42,782.72
4. Step 4: Simplify right side
   51,788.48x = 3,056,400,939.42
5. Step 5: Solve for x
   x = 3,056,400,939.42/51,788.48
6. Step 6: Final answer
   x = 59,017.00