Finding the Fourth Proportional to 76,128.86, 114,190.55 and 19,968.52

Step by Step Solution

1. Step 1: Write the proportion equation
   76,128.86 : 114,190.55 = 19,968.52 : x
2. Step 2: Convert to fraction form
   76,128.86/114,190.55 = 19,968.52/x
3. Step 3: Cross multiply
   76,128.86x = 114,190.55 × 19,968.52
4. Step 4: Simplify right side
   76,128.86x = 2,280,216,281.49
5. Step 5: Solve for x
   x = 2,280,216,281.49/76,128.86
6. Step 6: Final answer
   x = 29,952.06