Finding the Fourth Proportional to 72,399.52, 108,104.07 and 64,854.37

Step by Step Solution

1. Step 1: Write the proportion equation
   72,399.52 : 108,104.07 = 64,854.37 : x
2. Step 2: Convert to fraction form
   72,399.52/108,104.07 = 64,854.37/x
3. Step 3: Cross multiply
   72,399.52x = 108,104.07 × 64,854.37
4. Step 4: Simplify right side
   72,399.52x = 7,011,021,354.29
5. Step 5: Solve for x
   x = 7,011,021,354.29/72,399.52
6. Step 6: Final answer
   x = 96,837.95