Finding the Fourth Proportional to 64,750.72, 89,360.10 and 39,259.52

Step by Step Solution

1. Step 1: Write the proportion equation
   64,750.72 : 89,360.10 = 39,259.52 : x
2. Step 2: Convert to fraction form
   64,750.72/89,360.10 = 39,259.52/x
3. Step 3: Cross multiply
   64,750.72x = 89,360.10 × 39,259.52
4. Step 4: Simplify right side
   64,750.72x = 3,508,234,856.55
5. Step 5: Solve for x
   x = 3,508,234,856.55/64,750.72
6. Step 6: Final answer
   x = 54,180.63