Finding the Fourth Proportional to 727,103.54, 1,003,143.18 and 421,012.82

Step by Step Solution

1. Step 1: Write the proportion equation
   727,103.54 : 1,003,143.18 = 421,012.82 : x
2. Step 2: Convert to fraction form
   727,103.54/1,003,143.18 = 421,012.82/x
3. Step 3: Cross multiply
   727,103.54x = 1,003,143.18 × 421,012.82
4. Step 4: Simplify right side
   727,103.54x = 422,336,139,075.57
5. Step 5: Solve for x
   x = 422,336,139,075.57/727,103.54
6. Step 6: Final answer
   x = 580,847.32