Finding the Fourth Proportional to 42,064.80, 62,987.76 and 40,818.18

Step by Step Solution

1. Step 1: Write the proportion equation
   42,064.80 : 62,987.76 = 40,818.18 : x
2. Step 2: Convert to fraction form
   42,064.80/62,987.76 = 40,818.18/x
3. Step 3: Cross multiply
   42,064.80x = 62,987.76 × 40,818.18
4. Step 4: Simplify right side
   42,064.80x = 2,571,045,725.48
5. Step 5: Solve for x
   x = 2,571,045,725.48/42,064.80
6. Step 6: Final answer
   x = 61,121.07