Finding the Fourth Proportional to 42,086.48, 63,131.87 and 39,958.25

Step by Step Solution

1. Step 1: Write the proportion equation
   42,086.48 : 63,131.87 = 39,958.25 : x
2. Step 2: Convert to fraction form
   42,086.48/63,131.87 = 39,958.25/x
3. Step 3: Cross multiply
   42,086.48x = 63,131.87 × 39,958.25
4. Step 4: Simplify right side
   42,086.48x = 2,522,638,828.66
5. Step 5: Solve for x
   x = 2,522,638,828.66/42,086.48
6. Step 6: Final answer
   x = 59,939.42