Finding the Fourth Proportional to 90,506.30, 124,892.69 and 50,217.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,506.30 : 124,892.69 = 50,217.50 : x
2. Step 2: Convert to fraction form
   90,506.30/124,892.69 = 50,217.50/x
3. Step 3: Cross multiply
   90,506.30x = 124,892.69 × 50,217.50
4. Step 4: Simplify right side
   90,506.30x = 6,271,798,721.22
5. Step 5: Solve for x
   x = 6,271,798,721.22/90,506.30
6. Step 6: Final answer
   x = 69,296.82