Finding the Fourth Proportional to 164,342.72, 226,931.20 and 104,019.78

Step by Step Solution

1. Step 1: Write the proportion equation
   164,342.72 : 226,931.20 = 104,019.78 : x
2. Step 2: Convert to fraction form
   164,342.72/226,931.20 = 104,019.78/x
3. Step 3: Cross multiply
   164,342.72x = 226,931.20 × 104,019.78
4. Step 4: Simplify right side
   164,342.72x = 23,605,333,499.14
5. Step 5: Solve for x
   x = 23,605,333,499.14/164,342.72
6. Step 6: Final answer
   x = 143,634.80