Finding the Fourth Proportional to 31,155.42, 42,992.98 and 17,725.42

Step by Step Solution

1. Step 1: Write the proportion equation
   31,155.42 : 42,992.98 = 17,725.42 : x
2. Step 2: Convert to fraction form
   31,155.42/42,992.98 = 17,725.42/x
3. Step 3: Cross multiply
   31,155.42x = 42,992.98 × 17,725.42
4. Step 4: Simplify right side
   31,155.42x = 762,068,627.55
5. Step 5: Solve for x
   x = 762,068,627.55/31,155.42
6. Step 6: Final answer
   x = 24,460.23