Finding the Fourth Proportional to 31,243.59, 43,100.01 and 21,168.59

Step by Step Solution

1. Step 1: Write the proportion equation
   31,243.59 : 43,100.01 = 21,168.59 : x
2. Step 2: Convert to fraction form
   31,243.59/43,100.01 = 21,168.59/x
3. Step 3: Cross multiply
   31,243.59x = 43,100.01 × 21,168.59
4. Step 4: Simplify right side
   31,243.59x = 912,366,225.19
5. Step 5: Solve for x
   x = 912,366,225.19/31,243.59
6. Step 6: Final answer
   x = 29,201.71