Finding the Fourth Proportional to 404,411.12, 606,680.76 and 134,548.88

Step by Step Solution

1. Step 1: Write the proportion equation
   404,411.12 : 606,680.76 = 134,548.88 : x
2. Step 2: Convert to fraction form
   404,411.12/606,680.76 = 134,548.88/x
3. Step 3: Cross multiply
   404,411.12x = 606,680.76 × 134,548.88
4. Step 4: Simplify right side
   404,411.12x = 81,628,216,775.55
5. Step 5: Solve for x
   x = 81,628,216,775.55/404,411.12
6. Step 6: Final answer
   x = 201,844.64