Finding the Fourth Proportional to 49,966.29, 68,983.52 and 31,128.93

Step by Step Solution

1. Step 1: Write the proportion equation
   49,966.29 : 68,983.52 = 31,128.93 : x
2. Step 2: Convert to fraction form
   49,966.29/68,983.52 = 31,128.93/x
3. Step 3: Cross multiply
   49,966.29x = 68,983.52 × 31,128.93
4. Step 4: Simplify right side
   49,966.29x = 2,147,383,009.59
5. Step 5: Solve for x
   x = 2,147,383,009.59/49,966.29
6. Step 6: Final answer
   x = 42,976.64