Finding the Fourth Proportional to 51,449.78, 70,978.17 and 30,219.48

Step by Step Solution

1. Step 1: Write the proportion equation
   51,449.78 : 70,978.17 = 30,219.48 : x
2. Step 2: Convert to fraction form
   51,449.78/70,978.17 = 30,219.48/x
3. Step 3: Cross multiply
   51,449.78x = 70,978.17 × 30,219.48
4. Step 4: Simplify right side
   51,449.78x = 2,144,923,502.07
5. Step 5: Solve for x
   x = 2,144,923,502.07/51,449.78
6. Step 6: Final answer
   x = 41,689.65