Finding the Fourth Proportional to 78,743.88, 108,666.09 and 42,933.78

Step by Step Solution

1. Step 1: Write the proportion equation
   78,743.88 : 108,666.09 = 42,933.78 : x
2. Step 2: Convert to fraction form
   78,743.88/108,666.09 = 42,933.78/x
3. Step 3: Cross multiply
   78,743.88x = 108,666.09 × 42,933.78
4. Step 4: Simplify right side
   78,743.88x = 4,665,446,001.52
5. Step 5: Solve for x
   x = 4,665,446,001.52/78,743.88
6. Step 6: Final answer
   x = 59,248.36