Finding the Fourth Proportional to 120,787.64, 181,144.56 and 57,574.46

Step by Step Solution

1. Step 1: Write the proportion equation
   120,787.64 : 181,144.56 = 57,574.46 : x
2. Step 2: Convert to fraction form
   120,787.64/181,144.56 = 57,574.46/x
3. Step 3: Cross multiply
   120,787.64x = 181,144.56 × 57,574.46
4. Step 4: Simplify right side
   120,787.64x = 10,429,300,223.94
5. Step 5: Solve for x
   x = 10,429,300,223.94/120,787.64
6. Step 6: Final answer
   x = 86,344.10