Finding the Fourth Proportional to 78,806.80, 108,753.02 and 42,996.70

Step by Step Solution

1. Step 1: Write the proportion equation
   78,806.80 : 108,753.02 = 42,996.70 : x
2. Step 2: Convert to fraction form
   78,806.80/108,753.02 = 42,996.70/x
3. Step 3: Cross multiply
   78,806.80x = 108,753.02 × 42,996.70
4. Step 4: Simplify right side
   78,806.80x = 4,676,020,488.17
5. Step 5: Solve for x
   x = 4,676,020,488.17/78,806.80
6. Step 6: Final answer
   x = 59,335.24