Finding the Fourth Proportional to 139,523.52, 209,416.80 and 50,862.72

Step by Step Solution

1. Step 1: Write the proportion equation
   139,523.52 : 209,416.80 = 50,862.72 : x
2. Step 2: Convert to fraction form
   139,523.52/209,416.80 = 50,862.72/x
3. Step 3: Cross multiply
   139,523.52x = 209,416.80 × 50,862.72
4. Step 4: Simplify right side
   139,523.52x = 10,651,508,061.70
5. Step 5: Solve for x
   x = 10,651,508,061.70/139,523.52
6. Step 6: Final answer
   x = 76,342.03