Finding the Fourth Proportional to 31,145.56, 42,979.53 and 17,714.92

Step by Step Solution

1. Step 1: Write the proportion equation
   31,145.56 : 42,979.53 = 17,714.92 : x
2. Step 2: Convert to fraction form
   31,145.56/42,979.53 = 17,714.92/x
3. Step 3: Cross multiply
   31,145.56x = 42,979.53 × 17,714.92
4. Step 4: Simplify right side
   31,145.56x = 761,378,935.59
5. Step 5: Solve for x
   x = 761,378,935.59/31,145.56
6. Step 6: Final answer
   x = 24,445.83