Finding the Fourth Proportional to 76,978.44, 106,224.19 and 42,984.27

Step by Step Solution

1. Step 1: Write the proportion equation
   76,978.44 : 106,224.19 = 42,984.27 : x
2. Step 2: Convert to fraction form
   76,978.44/106,224.19 = 42,984.27/x
3. Step 3: Cross multiply
   76,978.44x = 106,224.19 × 42,984.27
4. Step 4: Simplify right side
   76,978.44x = 4,565,969,156.03
5. Step 5: Solve for x
   x = 4,565,969,156.03/76,978.44
6. Step 6: Final answer
   x = 59,314.91