Finding the Fourth Proportional to 52,128.85, 78,132.78 and 23,989.83

Step by Step Solution

1. Step 1: Write the proportion equation
   52,128.85 : 78,132.78 = 23,989.83 : x
2. Step 2: Convert to fraction form
   52,128.85/78,132.78 = 23,989.83/x
3. Step 3: Cross multiply
   52,128.85x = 78,132.78 × 23,989.83
4. Step 4: Simplify right side
   52,128.85x = 1,874,392,169.60
5. Step 5: Solve for x
   x = 1,874,392,169.60/52,128.85
6. Step 6: Final answer
   x = 35,956.91