Finding the Fourth Proportional to 52,820.35, 72,889.92 and 31,611.31

Step by Step Solution

1. Step 1: Write the proportion equation
   52,820.35 : 72,889.92 = 31,611.31 : x
2. Step 2: Convert to fraction form
   52,820.35/72,889.92 = 31,611.31/x
3. Step 3: Cross multiply
   52,820.35x = 72,889.92 × 31,611.31
4. Step 4: Simplify right side
   52,820.35x = 2,304,145,674.77
5. Step 5: Solve for x
   x = 2,304,145,674.77/52,820.35
6. Step 6: Final answer
   x = 43,622.31