Finding the Fourth Proportional to 90,530.52, 124,929.72 and 50,242.20

Step by Step Solution

1. Step 1: Write the proportion equation
   90,530.52 : 124,929.72 = 50,242.20 : x
2. Step 2: Convert to fraction form
   90,530.52/124,929.72 = 50,242.20/x
3. Step 3: Cross multiply
   90,530.52x = 124,929.72 × 50,242.20
4. Step 4: Simplify right side
   90,530.52x = 6,276,743,978.18
5. Step 5: Solve for x
   x = 6,276,743,978.18/90,530.52
6. Step 6: Final answer
   x = 69,332.91