Finding the Fourth Proportional to 508,701.72, 701,982.61 and 301,978.96

Step by Step Solution

1. Step 1: Write the proportion equation
   508,701.72 : 701,982.61 = 301,978.96 : x
2. Step 2: Convert to fraction form
   508,701.72/701,982.61 = 301,978.96/x
3. Step 3: Cross multiply
   508,701.72x = 701,982.61 × 301,978.96
4. Step 4: Simplify right side
   508,701.72x = 211,983,978,505.89
5. Step 5: Solve for x
   x = 211,983,978,505.89/508,701.72
6. Step 6: Final answer
   x = 416,715.67