Finding the Fourth Proportional to 49,886.47, 74,388.65 and 49,441.78

Step by Step Solution

1. Step 1: Write the proportion equation
   49,886.47 : 74,388.65 = 49,441.78 : x
2. Step 2: Convert to fraction form
   49,886.47/74,388.65 = 49,441.78/x
3. Step 3: Cross multiply
   49,886.47x = 74,388.65 × 49,441.78
4. Step 4: Simplify right side
   49,886.47x = 3,677,907,267.80
5. Step 5: Solve for x
   x = 3,677,907,267.80/49,886.47
6. Step 6: Final answer
   x = 73,725.55