Finding the Fourth Proportional to 516,978.60, 775,468.17 and 162,020.27

Step by Step Solution

1. Step 1: Write the proportion equation
   516,978.60 : 775,468.17 = 162,020.27 : x
2. Step 2: Convert to fraction form
   516,978.60/775,468.17 = 162,020.27/x
3. Step 3: Cross multiply
   516,978.60x = 775,468.17 × 162,020.27
4. Step 4: Simplify right side
   516,978.60x = 125,641,558,402.47
5. Step 5: Solve for x
   x = 125,641,558,402.47/516,978.60
6. Step 6: Final answer
   x = 243,030.48