Finding the Fourth Proportional to 57,221.99, 78,967.29 and 31,729.43

Step by Step Solution

1. Step 1: Write the proportion equation
   57,221.99 : 78,967.29 = 31,729.43 : x
2. Step 2: Convert to fraction form
   57,221.99/78,967.29 = 31,729.43/x
3. Step 3: Cross multiply
   57,221.99x = 78,967.29 × 31,729.43
4. Step 4: Simplify right side
   57,221.99x = 2,505,587,100.34
5. Step 5: Solve for x
   x = 2,505,587,100.34/57,221.99
6. Step 6: Final answer
   x = 43,787.14