Finding the Fourth Proportional to 51,128.43, 76,727.67 and 17,848.50

Step by Step Solution

1. Step 1: Write the proportion equation
   51,128.43 : 76,727.67 = 17,848.50 : x
2. Step 2: Convert to fraction form
   51,128.43/76,727.67 = 17,848.50/x
3. Step 3: Cross multiply
   51,128.43x = 76,727.67 × 17,848.50
4. Step 4: Simplify right side
   51,128.43x = 1,369,473,818.00
5. Step 5: Solve for x
   x = 1,369,473,818.00/51,128.43
6. Step 6: Final answer
   x = 26,784.98