Finding the Fourth Proportional to 50,112.02, 74,663.47 and 49,390.31

Step by Step Solution

1. Step 1: Write the proportion equation
   50,112.02 : 74,663.47 = 49,390.31 : x
2. Step 2: Convert to fraction form
   50,112.02/74,663.47 = 49,390.31/x
3. Step 3: Cross multiply
   50,112.02x = 74,663.47 × 49,390.31
4. Step 4: Simplify right side
   50,112.02x = 3,687,651,308.71
5. Step 5: Solve for x
   x = 3,687,651,308.71/50,112.02
6. Step 6: Final answer
   x = 73,588.17