Finding the Fourth Proportional to 52,814.16, 72,879.48 and 28,936.98

Step by Step Solution

1. Step 1: Write the proportion equation
   52,814.16 : 72,879.48 = 28,936.98 : x
2. Step 2: Convert to fraction form
   52,814.16/72,879.48 = 28,936.98/x
3. Step 3: Cross multiply
   52,814.16x = 72,879.48 × 28,936.98
4. Step 4: Simplify right side
   52,814.16x = 2,108,912,055.17
5. Step 5: Solve for x
   x = 2,108,912,055.17/52,814.16
6. Step 6: Final answer
   x = 39,930.81