Finding the Fourth Proportional to 31,101.06, 42,924.45 and 18,354.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,101.06 : 42,924.45 = 18,354.50 : x
2. Step 2: Convert to fraction form
   31,101.06/42,924.45 = 18,354.50/x
3. Step 3: Cross multiply
   31,101.06x = 42,924.45 × 18,354.50
4. Step 4: Simplify right side
   31,101.06x = 787,856,817.53
5. Step 5: Solve for x
   x = 787,856,817.53/31,101.06
6. Step 6: Final answer
   x = 25,332.15