Finding the Fourth Proportional to 42,799.02, 58,979.37 and 30,839.77

Step by Step Solution

1. Step 1: Write the proportion equation
   42,799.02 : 58,979.37 = 30,839.77 : x
2. Step 2: Convert to fraction form
   42,799.02/58,979.37 = 30,839.77/x
3. Step 3: Cross multiply
   42,799.02x = 58,979.37 × 30,839.77
4. Step 4: Simplify right side
   42,799.02x = 1,818,910,394.92
5. Step 5: Solve for x
   x = 1,818,910,394.92/42,799.02
6. Step 6: Final answer
   x = 42,498.88