Finding the Fourth Proportional to 52,820.70, 72,874.42 and 31,306.09

Step by Step Solution

1. Step 1: Write the proportion equation
   52,820.70 : 72,874.42 = 31,306.09 : x
2. Step 2: Convert to fraction form
   52,820.70/72,874.42 = 31,306.09/x
3. Step 3: Cross multiply
   52,820.70x = 72,874.42 × 31,306.09
4. Step 4: Simplify right side
   52,820.70x = 2,281,412,994.69
5. Step 5: Solve for x
   x = 2,281,412,994.69/52,820.70
6. Step 6: Final answer
   x = 43,191.65