Finding the Fourth Proportional to 90,215.98, 124,496.33 and 49,929.76

Step by Step Solution

1. Step 1: Write the proportion equation
   90,215.98 : 124,496.33 = 49,929.76 : x
2. Step 2: Convert to fraction form
   90,215.98/124,496.33 = 49,929.76/x
3. Step 3: Cross multiply
   90,215.98x = 124,496.33 × 49,929.76
4. Step 4: Simplify right side
   90,215.98x = 6,216,071,877.78
5. Step 5: Solve for x
   x = 6,216,071,877.78/90,215.98
6. Step 6: Final answer
   x = 68,902.12