Finding the Fourth Proportional to 84,978.76, 127,470.52 and 28,819

Step by Step Solution

1. Step 1: Write the proportion equation
   84,978.76 : 127,470.52 = 28,819 : x
2. Step 2: Convert to fraction form
   84,978.76/127,470.52 = 28,819/x
3. Step 3: Cross multiply
   84,978.76x = 127,470.52 × 28,819
4. Step 4: Simplify right side
   84,978.76x = 3,673,572,915.88
5. Step 5: Solve for x
   x = 3,673,572,915.88/84,978.76
6. Step 6: Final answer
   x = 43,229.31