Finding the Fourth Proportional to 525,978.42, 725,513.60 and 364,774.66

Step by Step Solution

1. Step 1: Write the proportion equation
   525,978.42 : 725,513.60 = 364,774.66 : x
2. Step 2: Convert to fraction form
   525,978.42/725,513.60 = 364,774.66/x
3. Step 3: Cross multiply
   525,978.42x = 725,513.60 × 364,774.66
4. Step 4: Simplify right side
   525,978.42x = 264,648,976,765.38
5. Step 5: Solve for x
   x = 264,648,976,765.38/525,978.42
6. Step 6: Final answer
   x = 503,155.58