Finding the Fourth Proportional to 67,728.80, 101,602.72 and 28,276.94

Step by Step Solution

1. Step 1: Write the proportion equation
   67,728.80 : 101,602.72 = 28,276.94 : x
2. Step 2: Convert to fraction form
   67,728.80/101,602.72 = 28,276.94/x
3. Step 3: Cross multiply
   67,728.80x = 101,602.72 × 28,276.94
4. Step 4: Simplify right side
   67,728.80x = 2,873,013,438.57
5. Step 5: Solve for x
   x = 2,873,013,438.57/67,728.80
6. Step 6: Final answer
   x = 42,419.38