Finding the Fourth Proportional to 76,608.45, 105,718.82 and 42,616.71

Step by Step Solution

1. Step 1: Write the proportion equation
   76,608.45 : 105,718.82 = 42,616.71 : x
2. Step 2: Convert to fraction form
   76,608.45/105,718.82 = 42,616.71/x
3. Step 3: Cross multiply
   76,608.45x = 105,718.82 × 42,616.71
4. Step 4: Simplify right side
   76,608.45x = 4,505,388,080.40
5. Step 5: Solve for x
   x = 4,505,388,080.40/76,608.45
6. Step 6: Final answer
   x = 58,810.59