Finding the Fourth Proportional to 31,001.45, 42,706.07 and 22,478.52

Step by Step Solution

1. Step 1: Write the proportion equation
   31,001.45 : 42,706.07 = 22,478.52 : x
2. Step 2: Convert to fraction form
   31,001.45/42,706.07 = 22,478.52/x
3. Step 3: Cross multiply
   31,001.45x = 42,706.07 × 22,478.52
4. Step 4: Simplify right side
   31,001.45x = 959,969,380.67
5. Step 5: Solve for x
   x = 959,969,380.67/31,001.45
6. Step 6: Final answer
   x = 30,965.31