Finding the Fourth Proportional to 31,095.59, 42,900.50 and 19,924.07

Step by Step Solution

1. Step 1: Write the proportion equation
   31,095.59 : 42,900.50 = 19,924.07 : x
2. Step 2: Convert to fraction form
   31,095.59/42,900.50 = 19,924.07/x
3. Step 3: Cross multiply
   31,095.59x = 42,900.50 × 19,924.07
4. Step 4: Simplify right side
   31,095.59x = 854,752,400.34
5. Step 5: Solve for x
   x = 854,752,400.34/31,095.59
6. Step 6: Final answer
   x = 27,487.90