Finding the Fourth Proportional to 90,426.63, 124,790.25 and 50,142.09

Step by Step Solution

1. Step 1: Write the proportion equation
   90,426.63 : 124,790.25 = 50,142.09 : x
2. Step 2: Convert to fraction form
   90,426.63/124,790.25 = 50,142.09/x
3. Step 3: Cross multiply
   90,426.63x = 124,790.25 × 50,142.09
4. Step 4: Simplify right side
   90,426.63x = 6,257,243,946.62
5. Step 5: Solve for x
   x = 6,257,243,946.62/90,426.63
6. Step 6: Final answer
   x = 69,196.92