Finding the Fourth Proportional to 78,770.52, 108,702.84 and 42,960.36

Step by Step Solution

1. Step 1: Write the proportion equation
   78,770.52 : 108,702.84 = 42,960.36 : x
2. Step 2: Convert to fraction form
   78,770.52/108,702.84 = 42,960.36/x
3. Step 3: Cross multiply
   78,770.52x = 108,702.84 × 42,960.36
4. Step 4: Simplify right side
   78,770.52x = 4,669,913,139.42
5. Step 5: Solve for x
   x = 4,669,913,139.42/78,770.52
6. Step 6: Final answer
   x = 59,285.04