Finding the Fourth Proportional to 78,760.88, 108,688.60 and 42,950.10

Step by Step Solution

1. Step 1: Write the proportion equation
   78,760.88 : 108,688.60 = 42,950.10 : x
2. Step 2: Convert to fraction form
   78,760.88/108,688.60 = 42,950.10/x
3. Step 3: Cross multiply
   78,760.88x = 108,688.60 × 42,950.10
4. Step 4: Simplify right side
   78,760.88x = 4,668,186,238.86
5. Step 5: Solve for x
   x = 4,668,186,238.86/78,760.88
6. Step 6: Final answer
   x = 59,270.37