Finding the Fourth Proportional to 71,310.09, 98,409.38 and 42,659.31

Step by Step Solution

1. Step 1: Write the proportion equation
   71,310.09 : 98,409.38 = 42,659.31 : x
2. Step 2: Convert to fraction form
   71,310.09/98,409.38 = 42,659.31/x
3. Step 3: Cross multiply
   71,310.09x = 98,409.38 × 42,659.31
4. Step 4: Simplify right side
   71,310.09x = 4,198,076,035.03
5. Step 5: Solve for x
   x = 4,198,076,035.03/71,310.09
6. Step 6: Final answer
   x = 58,870.72