Finding the Fourth Proportional to 542,155.94, 748,191.60 and 300,415.89

Step by Step Solution

1. Step 1: Write the proportion equation
   542,155.94 : 748,191.60 = 300,415.89 : x
2. Step 2: Convert to fraction form
   542,155.94/748,191.60 = 300,415.89/x
3. Step 3: Cross multiply
   542,155.94x = 748,191.60 × 300,415.89
4. Step 4: Simplify right side
   542,155.94x = 224,768,645,404.52
5. Step 5: Solve for x
   x = 224,768,645,404.52/542,155.94
6. Step 6: Final answer
   x = 414,583.02