Finding the Fourth Proportional to 64,789.92, 89,395.20 and 37,923.12

Step by Step Solution

1. Step 1: Write the proportion equation
   64,789.92 : 89,395.20 = 37,923.12 : x
2. Step 2: Convert to fraction form
   64,789.92/89,395.20 = 37,923.12/x
3. Step 3: Cross multiply
   64,789.92x = 89,395.20 × 37,923.12
4. Step 4: Simplify right side
   64,789.92x = 3,390,144,897.02
5. Step 5: Solve for x
   x = 3,390,144,897.02/64,789.92
6. Step 6: Final answer
   x = 52,325.19