Finding the Fourth Proportional to 139,547.72, 209,321.73 and 50,801.96

Step by Step Solution

1. Step 1: Write the proportion equation
   139,547.72 : 209,321.73 = 50,801.96 : x
2. Step 2: Convert to fraction form
   139,547.72/209,321.73 = 50,801.96/x
3. Step 3: Cross multiply
   139,547.72x = 209,321.73 × 50,801.96
4. Step 4: Simplify right side
   139,547.72x = 10,633,954,154.59
5. Step 5: Solve for x
   x = 10,633,954,154.59/139,547.72
6. Step 6: Final answer
   x = 76,202.99