Finding the Fourth Proportional to 31,118.67, 42,979.59 and 22,658.61

Step by Step Solution

1. Step 1: Write the proportion equation
   31,118.67 : 42,979.59 = 22,658.61 : x
2. Step 2: Convert to fraction form
   31,118.67/42,979.59 = 22,658.61/x
3. Step 3: Cross multiply
   31,118.67x = 42,979.59 × 22,658.61
4. Step 4: Simplify right side
   31,118.67x = 973,857,767.77
5. Step 5: Solve for x
   x = 973,857,767.77/31,118.67
6. Step 6: Final answer
   x = 31,294.97