Finding the Fourth Proportional to 31,159.77, 42,998.48 and 17,012.58

Step by Step Solution

1. Step 1: Write the proportion equation
   31,159.77 : 42,998.48 = 17,012.58 : x
2. Step 2: Convert to fraction form
   31,159.77/42,998.48 = 17,012.58/x
3. Step 3: Cross multiply
   31,159.77x = 42,998.48 × 17,012.58
4. Step 4: Simplify right side
   31,159.77x = 731,514,780.82
5. Step 5: Solve for x
   x = 731,514,780.82/31,159.77
6. Step 6: Final answer
   x = 23,476.26