Finding the Fourth Proportional to 31,259.34, 43,126.25 and 19,926.23

Step by Step Solution

1. Step 1: Write the proportion equation
   31,259.34 : 43,126.25 = 19,926.23 : x
2. Step 2: Convert to fraction form
   31,259.34/43,126.25 = 19,926.23/x
3. Step 3: Cross multiply
   31,259.34x = 43,126.25 × 19,926.23
4. Step 4: Simplify right side
   31,259.34x = 859,343,261.28
5. Step 5: Solve for x
   x = 859,343,261.28/31,259.34
6. Step 6: Final answer
   x = 27,490.77