Finding the Fourth Proportional to 89,238.24, 123,131.71 and 51,009.90

Step by Step Solution

1. Step 1: Write the proportion equation
   89,238.24 : 123,131.71 = 51,009.90 : x
2. Step 2: Convert to fraction form
   89,238.24/123,131.71 = 51,009.90/x
3. Step 3: Cross multiply
   89,238.24x = 123,131.71 × 51,009.90
4. Step 4: Simplify right side
   89,238.24x = 6,280,936,213.93
5. Step 5: Solve for x
   x = 6,280,936,213.93/89,238.24
6. Step 6: Final answer
   x = 70,383.91