Finding the Fourth Proportional to 64,715.61, 96,553.59 and 57,611.27

Step by Step Solution

1. Step 1: Write the proportion equation
   64,715.61 : 96,553.59 = 57,611.27 : x
2. Step 2: Convert to fraction form
   64,715.61/96,553.59 = 57,611.27/x
3. Step 3: Cross multiply
   64,715.61x = 96,553.59 × 57,611.27
4. Step 4: Simplify right side
   64,715.61x = 5,562,574,942.96
5. Step 5: Solve for x
   x = 5,562,574,942.96/64,715.61
6. Step 6: Final answer
   x = 85,954.15