Finding the Fourth Proportional to 64,871.78, 89,573.73 and 50,764.82

Step by Step Solution

1. Step 1: Write the proportion equation
   64,871.78 : 89,573.73 = 50,764.82 : x
2. Step 2: Convert to fraction form
   64,871.78/89,573.73 = 50,764.82/x
3. Step 3: Cross multiply
   64,871.78x = 89,573.73 × 50,764.82
4. Step 4: Simplify right side
   64,871.78x = 4,547,194,280.18
5. Step 5: Solve for x
   x = 4,547,194,280.18/64,871.78
6. Step 6: Final answer
   x = 70,095.11