Finding the Fourth Proportional to 720,196.82, 993,975.72 and 429,820.72

Step by Step Solution

1. Step 1: Write the proportion equation
   720,196.82 : 993,975.72 = 429,820.72 : x
2. Step 2: Convert to fraction form
   720,196.82/993,975.72 = 429,820.72/x
3. Step 3: Cross multiply
   720,196.82x = 993,975.72 × 429,820.72
4. Step 4: Simplify right side
   720,196.82x = 427,231,359,632.92
5. Step 5: Solve for x
   x = 427,231,359,632.92/720,196.82
6. Step 6: Final answer
   x = 593,214.73