Finding the Fourth Proportional to 272,059.50, 408,112.77 and 75,067.50

Step by Step Solution

1. Step 1: Write the proportion equation
   272,059.50 : 408,112.77 = 75,067.50 : x
2. Step 2: Convert to fraction form
   272,059.50/408,112.77 = 75,067.50/x
3. Step 3: Cross multiply
   272,059.50x = 408,112.77 × 75,067.50
4. Step 4: Simplify right side
   272,059.50x = 30,636,005,361.98
5. Step 5: Solve for x
   x = 30,636,005,361.98/272,059.50
6. Step 6: Final answer
   x = 112,607.74