Finding the Fourth Proportional to 89,866.76, 124,016.54 and 49,580.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,866.76 : 124,016.54 = 49,580.50 : x
2. Step 2: Convert to fraction form
   89,866.76/124,016.54 = 49,580.50/x
3. Step 3: Cross multiply
   89,866.76x = 124,016.54 × 49,580.50
4. Step 4: Simplify right side
   89,866.76x = 6,148,802,061.47
5. Step 5: Solve for x
   x = 6,148,802,061.47/89,866.76
6. Step 6: Final answer
   x = 68,421.32