Finding the Fourth Proportional to 55,449, 76,521.51 and 30,300.12

Step by Step Solution

1. Step 1: Write the proportion equation
   55,449 : 76,521.51 = 30,300.12 : x
2. Step 2: Convert to fraction form
   55,449/76,521.51 = 30,300.12/x
3. Step 3: Cross multiply
   55,449x = 76,521.51 × 30,300.12
4. Step 4: Simplify right side
   55,449x = 2,318,610,935.58
5. Step 5: Solve for x
   x = 2,318,610,935.58/55,449
6. Step 6: Final answer
   x = 41,815.20