Finding the Fourth Proportional to 31,111.86, 42,918.76 and 19,762.86

Step by Step Solution

1. Step 1: Write the proportion equation
   31,111.86 : 42,918.76 = 19,762.86 : x
2. Step 2: Convert to fraction form
   31,111.86/42,918.76 = 19,762.86/x
3. Step 3: Cross multiply
   31,111.86x = 42,918.76 × 19,762.86
4. Step 4: Simplify right side
   31,111.86x = 848,197,445.25
5. Step 5: Solve for x
   x = 848,197,445.25/31,111.86
6. Step 6: Final answer
   x = 27,262.83