Finding the Fourth Proportional to 74,118.18, 111,143.52 and 31,978.29

Step by Step Solution

1. Step 1: Write the proportion equation
   74,118.18 : 111,143.52 = 31,978.29 : x
2. Step 2: Convert to fraction form
   74,118.18/111,143.52 = 31,978.29/x
3. Step 3: Cross multiply
   74,118.18x = 111,143.52 × 31,978.29
4. Step 4: Simplify right side
   74,118.18x = 3,554,179,714.18
5. Step 5: Solve for x
   x = 3,554,179,714.18/74,118.18
6. Step 6: Final answer
   x = 47,952.87