Finding the Fourth Proportional to 78,296.85, 108,049.10 and 42,485.94

Step by Step Solution

1. Step 1: Write the proportion equation
   78,296.85 : 108,049.10 = 42,485.94 : x
2. Step 2: Convert to fraction form
   78,296.85/108,049.10 = 42,485.94/x
3. Step 3: Cross multiply
   78,296.85x = 108,049.10 × 42,485.94
4. Step 4: Simplify right side
   78,296.85x = 4,590,567,367.22
5. Step 5: Solve for x
   x = 4,590,567,367.22/78,296.85
6. Step 6: Final answer
   x = 58,630.29