Finding the Fourth Proportional to 52,764.14, 72,814.55 and 28,890.81

Step by Step Solution

1. Step 1: Write the proportion equation
   52,764.14 : 72,814.55 = 28,890.81 : x
2. Step 2: Convert to fraction form
   52,764.14/72,814.55 = 28,890.81/x
3. Step 3: Cross multiply
   52,764.14x = 72,814.55 × 28,890.81
4. Step 4: Simplify right side
   52,764.14x = 2,103,671,184.83
5. Step 5: Solve for x
   x = 2,103,671,184.83/52,764.14
6. Step 6: Final answer
   x = 39,869.33