Finding the Fourth Proportional to 645,725.00, 891,100.49 and 359,245.01

Step by Step Solution

1. Step 1: Write the proportion equation
   645,725.00 : 891,100.49 = 359,245.01 : x
2. Step 2: Convert to fraction form
   645,725.00/891,100.49 = 359,245.01/x
3. Step 3: Cross multiply
   645,725.00x = 891,100.49 × 359,245.01
4. Step 4: Simplify right side
   645,725.00x = 320,123,398,189.33
5. Step 5: Solve for x
   x = 320,123,398,189.33/645,725.00
6. Step 6: Final answer
   x = 495,758.10