Finding the Fourth Proportional to 42,354.15, 58,423.30 and 28,014.31

Step by Step Solution

1. Step 1: Write the proportion equation
   42,354.15 : 58,423.30 = 28,014.31 : x
2. Step 2: Convert to fraction form
   42,354.15/58,423.30 = 28,014.31/x
3. Step 3: Cross multiply
   42,354.15x = 58,423.30 × 28,014.31
4. Step 4: Simplify right side
   42,354.15x = 1,636,688,437.42
5. Step 5: Solve for x
   x = 1,636,688,437.42/42,354.15
6. Step 6: Final answer
   x = 38,642.93