Finding the Fourth Proportional to 109,379.34, 164,063.54 and 42,831.68

Step by Step Solution

1. Step 1: Write the proportion equation
   109,379.34 : 164,063.54 = 42,831.68 : x
2. Step 2: Convert to fraction form
   109,379.34/164,063.54 = 42,831.68/x
3. Step 3: Cross multiply
   109,379.34x = 164,063.54 × 42,831.68
4. Step 4: Simplify right side
   109,379.34x = 7,027,116,010.47
5. Step 5: Solve for x
   x = 7,027,116,010.47/109,379.34
6. Step 6: Final answer
   x = 64,245.37