Finding the Fourth Proportional to 42,808.93, 59,072.29 and 28,983.13

Step by Step Solution

1. Step 1: Write the proportion equation
   42,808.93 : 59,072.29 = 28,983.13 : x
2. Step 2: Convert to fraction form
   42,808.93/59,072.29 = 28,983.13/x
3. Step 3: Cross multiply
   42,808.93x = 59,072.29 × 28,983.13
4. Step 4: Simplify right side
   42,808.93x = 1,712,099,860.47
5. Step 5: Solve for x
   x = 1,712,099,860.47/42,808.93
6. Step 6: Final answer
   x = 39,993.99