Finding the Fourth Proportional to 78,591.52, 108,457.68 and 42,782.56

Step by Step Solution

1. Step 1: Write the proportion equation
   78,591.52 : 108,457.68 = 42,782.56 : x
2. Step 2: Convert to fraction form
   78,591.52/108,457.68 = 42,782.56/x
3. Step 3: Cross multiply
   78,591.52x = 108,457.68 × 42,782.56
4. Step 4: Simplify right side
   78,591.52x = 4,640,097,202.06
5. Step 5: Solve for x
   x = 4,640,097,202.06/78,591.52
6. Step 6: Final answer
   x = 59,040.69