Finding the Fourth Proportional to 42,342, 63,725.70 and 31,866.30

Step by Step Solution

1. Step 1: Write the proportion equation
   42,342 : 63,725.70 = 31,866.30 : x
2. Step 2: Convert to fraction form
   42,342/63,725.70 = 31,866.30/x
3. Step 3: Cross multiply
   42,342x = 63,725.70 × 31,866.30
4. Step 4: Simplify right side
   42,342x = 2,030,702,273.91
5. Step 5: Solve for x
   x = 2,030,702,273.91/42,342
6. Step 6: Final answer
   x = 47,959.53