Finding the Fourth Proportional to 72,371.52, 108,723.60 and 51,363.72

Step by Step Solution

1. Step 1: Write the proportion equation
   72,371.52 : 108,723.60 = 51,363.72 : x
2. Step 2: Convert to fraction form
   72,371.52/108,723.60 = 51,363.72/x
3. Step 3: Cross multiply
   72,371.52x = 108,723.60 × 51,363.72
4. Step 4: Simplify right side
   72,371.52x = 5,584,448,547.79
5. Step 5: Solve for x
   x = 5,584,448,547.79/72,371.52
6. Step 6: Final answer
   x = 77,163.62