Finding the Fourth Proportional to 31,146.58, 42,979.51 and 17,347.85

Step by Step Solution

1. Step 1: Write the proportion equation
   31,146.58 : 42,979.51 = 17,347.85 : x
2. Step 2: Convert to fraction form
   31,146.58/42,979.51 = 17,347.85/x
3. Step 3: Cross multiply
   31,146.58x = 42,979.51 × 17,347.85
4. Step 4: Simplify right side
   31,146.58x = 745,602,092.55
5. Step 5: Solve for x
   x = 745,602,092.55/31,146.58
6. Step 6: Final answer
   x = 23,938.49