Finding the Fourth Proportional to 42,298.58, 58,372.52 and 23,178.40

Step by Step Solution

1. Step 1: Write the proportion equation
   42,298.58 : 58,372.52 = 23,178.40 : x
2. Step 2: Convert to fraction form
   42,298.58/58,372.52 = 23,178.40/x
3. Step 3: Cross multiply
   42,298.58x = 58,372.52 × 23,178.40
4. Step 4: Simplify right side
   42,298.58x = 1,352,981,617.57
5. Step 5: Solve for x
   x = 1,352,981,617.57/42,298.58
6. Step 6: Final answer
   x = 31,986.45