Finding the Fourth Proportional to 72,424.52, 108,141.32 and 64,879.38

Step by Step Solution

1. Step 1: Write the proportion equation
   72,424.52 : 108,141.32 = 64,879.38 : x
2. Step 2: Convert to fraction form
   72,424.52/108,141.32 = 64,879.38/x
3. Step 3: Cross multiply
   72,424.52x = 108,141.32 × 64,879.38
4. Step 4: Simplify right side
   72,424.52x = 7,016,141,793.98
5. Step 5: Solve for x
   x = 7,016,141,793.98/72,424.52
6. Step 6: Final answer
   x = 96,875.23