Finding the Fourth Proportional to 78,763.78, 108,694.56 and 42,953.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,763.78 : 108,694.56 = 42,953.50 : x
2. Step 2: Convert to fraction form
   78,763.78/108,694.56 = 42,953.50/x
3. Step 3: Cross multiply
   78,763.78x = 108,694.56 × 42,953.50
4. Step 4: Simplify right side
   78,763.78x = 4,668,811,782.96
5. Step 5: Solve for x
   x = 4,668,811,782.96/78,763.78
6. Step 6: Final answer
   x = 59,276.13