Finding the Fourth Proportional to 51,086.23, 70,499.33 and 28,426.17

Step by Step Solution

1. Step 1: Write the proportion equation
   51,086.23 : 70,499.33 = 28,426.17 : x
2. Step 2: Convert to fraction form
   51,086.23/70,499.33 = 28,426.17/x
3. Step 3: Cross multiply
   51,086.23x = 70,499.33 × 28,426.17
4. Step 4: Simplify right side
   51,086.23x = 2,004,026,168.31
5. Step 5: Solve for x
   x = 2,004,026,168.31/51,086.23
6. Step 6: Final answer
   x = 39,228.31