Finding the Fourth Proportional to 78,087.24, 107,760.60 and 42,277.32

Step by Step Solution

1. Step 1: Write the proportion equation
   78,087.24 : 107,760.60 = 42,277.32 : x
2. Step 2: Convert to fraction form
   78,087.24/107,760.60 = 42,277.32/x
3. Step 3: Cross multiply
   78,087.24x = 107,760.60 × 42,277.32
4. Step 4: Simplify right side
   78,087.24x = 4,555,829,369.59
5. Step 5: Solve for x
   x = 4,555,829,369.59/78,087.24
6. Step 6: Final answer
   x = 58,342.81