Finding the Fourth Proportional to 942,780.98, 1,301,019.18 and 513,068.42

Step by Step Solution

1. Step 1: Write the proportion equation
   942,780.98 : 1,301,019.18 = 513,068.42 : x
2. Step 2: Convert to fraction form
   942,780.98/1,301,019.18 = 513,068.42/x
3. Step 3: Cross multiply
   942,780.98x = 1,301,019.18 × 513,068.42
4. Step 4: Simplify right side
   942,780.98x = 667,511,855,072.30
5. Step 5: Solve for x
   x = 667,511,855,072.30/942,780.98
6. Step 6: Final answer
   x = 708,024.31