Finding the Fourth Proportional to 31,328.59, 43,211.25 and 19,229.69

Step by Step Solution

1. Step 1: Write the proportion equation
   31,328.59 : 43,211.25 = 19,229.69 : x
2. Step 2: Convert to fraction form
   31,328.59/43,211.25 = 19,229.69/x
3. Step 3: Cross multiply
   31,328.59x = 43,211.25 × 19,229.69
4. Step 4: Simplify right side
   31,328.59x = 830,938,935.19
5. Step 5: Solve for x
   x = 830,938,935.19/31,328.59
6. Step 6: Final answer
   x = 26,523.35