Finding the Fourth Proportional to 51,330.72, 70,831.32 and 28,667.88

Step by Step Solution

1. Step 1: Write the proportion equation
   51,330.72 : 70,831.32 = 28,667.88 : x
2. Step 2: Convert to fraction form
   51,330.72/70,831.32 = 28,667.88/x
3. Step 3: Cross multiply
   51,330.72x = 70,831.32 × 28,667.88
4. Step 4: Simplify right side
   51,330.72x = 2,030,583,782.00
5. Step 5: Solve for x
   x = 2,030,583,782.00/51,330.72
6. Step 6: Final answer
   x = 39,558.84