Finding the Fourth Proportional to 42,807.03, 59,069.68 and 28,981.25

Step by Step Solution

1. Step 1: Write the proportion equation
   42,807.03 : 59,069.68 = 28,981.25 : x
2. Step 2: Convert to fraction form
   42,807.03/59,069.68 = 28,981.25/x
3. Step 3: Cross multiply
   42,807.03x = 59,069.68 × 28,981.25
4. Step 4: Simplify right side
   42,807.03x = 1,711,912,904.38
5. Step 5: Solve for x
   x = 1,711,912,904.38/42,807.03
6. Step 6: Final answer
   x = 39,991.39