Finding the Fourth Proportional to 78,747.73, 108,669.50 and 42,938.44

Step by Step Solution

1. Step 1: Write the proportion equation
   78,747.73 : 108,669.50 = 42,938.44 : x
2. Step 2: Convert to fraction form
   78,747.73/108,669.50 = 42,938.44/x
3. Step 3: Cross multiply
   78,747.73x = 108,669.50 × 42,938.44
4. Step 4: Simplify right side
   78,747.73x = 4,666,098,480.23
5. Step 5: Solve for x
   x = 4,666,098,480.23/78,747.73
6. Step 6: Final answer
   x = 59,253.75