Finding the Fourth Proportional to 76,608.43, 105,706.77 and 42,612.43

Step by Step Solution

1. Step 1: Write the proportion equation
   76,608.43 : 105,706.77 = 42,612.43 : x
2. Step 2: Convert to fraction form
   76,608.43/105,706.77 = 42,612.43/x
3. Step 3: Cross multiply
   76,608.43x = 105,706.77 × 42,612.43
4. Step 4: Simplify right side
   76,608.43x = 4,504,422,337.15
5. Step 5: Solve for x
   x = 4,504,422,337.15/76,608.43
6. Step 6: Final answer
   x = 58,798.00