Finding the Fourth Proportional to 790,443.34, 1,089,727.76 and 499,910.10

Step by Step Solution

1. Step 1: Write the proportion equation
   790,443.34 : 1,089,727.76 = 499,910.10 : x
2. Step 2: Convert to fraction form
   790,443.34/1,089,727.76 = 499,910.10/x
3. Step 3: Cross multiply
   790,443.34x = 1,089,727.76 × 499,910.10
4. Step 4: Simplify right side
   790,443.34x = 544,765,913,474.38
5. Step 5: Solve for x
   x = 544,765,913,474.38/790,443.34
6. Step 6: Final answer
   x = 689,190.34