Finding the Fourth Proportional to 64,538, 89,071.06 and 39,064.92

Step by Step Solution

1. Step 1: Write the proportion equation
   64,538 : 89,071.06 = 39,064.92 : x
2. Step 2: Convert to fraction form
   64,538/89,071.06 = 39,064.92/x
3. Step 3: Cross multiply
   64,538x = 89,071.06 × 39,064.92
4. Step 4: Simplify right side
   64,538x = 3,479,553,833.22
5. Step 5: Solve for x
   x = 3,479,553,833.22/64,538
6. Step 6: Final answer
   x = 53,914.81