Finding the Fourth Proportional to 479,972.72, 719,949.36 and 124,978.88

Step by Step Solution

1. Step 1: Write the proportion equation
   479,972.72 : 719,949.36 = 124,978.88 : x
2. Step 2: Convert to fraction form
   479,972.72/719,949.36 = 124,978.88/x
3. Step 3: Cross multiply
   479,972.72x = 719,949.36 × 124,978.88
4. Step 4: Simplify right side
   479,972.72x = 89,978,464,669.52
5. Step 5: Solve for x
   x = 89,978,464,669.52/479,972.72
6. Step 6: Final answer
   x = 187,465.79