Finding the Fourth Proportional to 542,020.79, 747,978.99 and 300,298.52

Step by Step Solution

1. Step 1: Write the proportion equation
   542,020.79 : 747,978.99 = 300,298.52 : x
2. Step 2: Convert to fraction form
   542,020.79/747,978.99 = 300,298.52/x
3. Step 3: Cross multiply
   542,020.79x = 747,978.99 × 300,298.52
4. Step 4: Simplify right side
   542,020.79x = 224,616,983,688.10
5. Step 5: Solve for x
   x = 224,616,983,688.10/542,020.79
6. Step 6: Final answer
   x = 414,406.58