Finding the Fourth Proportional to 52,808.63, 72,875.89 and 28,936.21

Step by Step Solution

1. Step 1: Write the proportion equation
   52,808.63 : 72,875.89 = 28,936.21 : x
2. Step 2: Convert to fraction form
   52,808.63/72,875.89 = 28,936.21/x
3. Step 3: Cross multiply
   52,808.63x = 72,875.89 × 28,936.21
4. Step 4: Simplify right side
   52,808.63x = 2,108,752,056.98
5. Step 5: Solve for x
   x = 2,108,752,056.98/52,808.63
6. Step 6: Final answer
   x = 39,931.96