Finding the Fourth Proportional to 49,031.72, 67,677.68 and 28,900.28

Step by Step Solution

1. Step 1: Write the proportion equation
   49,031.72 : 67,677.68 = 28,900.28 : x
2. Step 2: Convert to fraction form
   49,031.72/67,677.68 = 28,900.28/x
3. Step 3: Cross multiply
   49,031.72x = 67,677.68 × 28,900.28
4. Step 4: Simplify right side
   49,031.72x = 1,955,903,901.75
5. Step 5: Solve for x
   x = 1,955,903,901.75/49,031.72
6. Step 6: Final answer
   x = 39,890.58