Finding the Fourth Proportional to 42,812.04, 59,101.25 and 28,495.70

Step by Step Solution

1. Step 1: Write the proportion equation
   42,812.04 : 59,101.25 = 28,495.70 : x
2. Step 2: Convert to fraction form
   42,812.04/59,101.25 = 28,495.70/x
3. Step 3: Cross multiply
   42,812.04x = 59,101.25 × 28,495.70
4. Step 4: Simplify right side
   42,812.04x = 1,684,131,273.27
5. Step 5: Solve for x
   x = 1,684,131,273.27/42,812.04
6. Step 6: Final answer
   x = 39,337.79