Finding the Fourth Proportional to 51,111.17, 70,532.86 and 28,449.80

Step by Step Solution

1. Step 1: Write the proportion equation
   51,111.17 : 70,532.86 = 28,449.80 : x
2. Step 2: Convert to fraction form
   51,111.17/70,532.86 = 28,449.80/x
3. Step 3: Cross multiply
   51,111.17x = 70,532.86 × 28,449.80
4. Step 4: Simplify right side
   51,111.17x = 2,006,645,760.43
5. Step 5: Solve for x
   x = 2,006,645,760.43/51,111.17
6. Step 6: Final answer
   x = 39,260.42