Finding the Fourth Proportional to 89,947, 124,123.60 and 49,659.88

Step by Step Solution

1. Step 1: Write the proportion equation
   89,947 : 124,123.60 = 49,659.88 : x
2. Step 2: Convert to fraction form
   89,947/124,123.60 = 49,659.88/x
3. Step 3: Cross multiply
   89,947x = 124,123.60 × 49,659.88
4. Step 4: Simplify right side
   89,947x = 6,163,963,081.17
5. Step 5: Solve for x
   x = 6,163,963,081.17/89,947
6. Step 6: Final answer
   x = 68,528.83