Finding the Fourth Proportional to 89,911.76, 123,981 and 61,250

Step by Step Solution

1. Step 1: Write the proportion equation
   89,911.76 : 123,981 = 61,250 : x
2. Step 2: Convert to fraction form
   89,911.76/123,981 = 61,250/x
3. Step 3: Cross multiply
   89,911.76x = 123,981 × 61,250
4. Step 4: Simplify right side
   89,911.76x = 7,593,836,250
5. Step 5: Solve for x
   x = 7,593,836,250/89,911.76
6. Step 6: Final answer
   x = 84,458.77