Finding the Fourth Proportional to 31,151.25, 43,008.17 and 19,992.69

Step by Step Solution

1. Step 1: Write the proportion equation
   31,151.25 : 43,008.17 = 19,992.69 : x
2. Step 2: Convert to fraction form
   31,151.25/43,008.17 = 19,992.69/x
3. Step 3: Cross multiply
   31,151.25x = 43,008.17 × 19,992.69
4. Step 4: Simplify right side
   31,151.25x = 859,848,910.31
5. Step 5: Solve for x
   x = 859,848,910.31/31,151.25
6. Step 6: Final answer
   x = 27,602.39