Finding the Fourth Proportional to 90,422, 124,783.86 and 50,137.46

Step by Step Solution

1. Step 1: Write the proportion equation
   90,422 : 124,783.86 = 50,137.46 : x
2. Step 2: Convert to fraction form
   90,422/124,783.86 = 50,137.46/x
3. Step 3: Cross multiply
   90,422x = 124,783.86 × 50,137.46
4. Step 4: Simplify right side
   90,422x = 6,256,345,789.40
5. Step 5: Solve for x
   x = 6,256,345,789.40/90,422
6. Step 6: Final answer
   x = 69,190.53