Finding the Fourth Proportional to 159,978.16, 220,812.56 and 92,002.56

Step by Step Solution

1. Step 1: Write the proportion equation
   159,978.16 : 220,812.56 = 92,002.56 : x
2. Step 2: Convert to fraction form
   159,978.16/220,812.56 = 92,002.56/x
3. Step 3: Cross multiply
   159,978.16x = 220,812.56 × 92,002.56
4. Step 4: Simplify right side
   159,978.16x = 20,315,320,800.15
5. Step 5: Solve for x
   x = 20,315,320,800.15/159,978.16
6. Step 6: Final answer
   x = 126,988.09