Finding the Fourth Proportional to 626,012.42, 863,916.69 and 354,075.00

Step by Step Solution

1. Step 1: Write the proportion equation
   626,012.42 : 863,916.69 = 354,075.00 : x
2. Step 2: Convert to fraction form
   626,012.42/863,916.69 = 354,075.00/x
3. Step 3: Cross multiply
   626,012.42x = 863,916.69 × 354,075.00
4. Step 4: Simplify right side
   626,012.42x = 305,891,298,108.17
5. Step 5: Solve for x
   x = 305,891,298,108.17/626,012.42
6. Step 6: Final answer
   x = 488,634.56