Finding the Fourth Proportional to 76,735.43, 105,880.86 and 42,743.05

Step by Step Solution

1. Step 1: Write the proportion equation
   76,735.43 : 105,880.86 = 42,743.05 : x
2. Step 2: Convert to fraction form
   76,735.43/105,880.86 = 42,743.05/x
3. Step 3: Cross multiply
   76,735.43x = 105,880.86 × 42,743.05
4. Step 4: Simplify right side
   76,735.43x = 4,525,670,893.02
5. Step 5: Solve for x
   x = 4,525,670,893.02/76,735.43
6. Step 6: Final answer
   x = 58,977.59