Finding the Fourth Proportional to 49,783.30, 74,502.72 and 47,716.58

Step by Step Solution

1. Step 1: Write the proportion equation
   49,783.30 : 74,502.72 = 47,716.58 : x
2. Step 2: Convert to fraction form
   49,783.30/74,502.72 = 47,716.58/x
3. Step 3: Cross multiply
   49,783.30x = 74,502.72 × 47,716.58
4. Step 4: Simplify right side
   49,783.30x = 3,555,015,185.35
5. Step 5: Solve for x
   x = 3,555,015,185.35/49,783.30
6. Step 6: Final answer
   x = 71,409.80