Finding the Fourth Proportional to 139,062.03, 208,592.64 and 50,315.19

Step by Step Solution

1. Step 1: Write the proportion equation
   139,062.03 : 208,592.64 = 50,315.19 : x
2. Step 2: Convert to fraction form
   139,062.03/208,592.64 = 50,315.19/x
3. Step 3: Cross multiply
   139,062.03x = 208,592.64 × 50,315.19
4. Step 4: Simplify right side
   139,062.03x = 10,495,378,314.20
5. Step 5: Solve for x
   x = 10,495,378,314.20/139,062.03
6. Step 6: Final answer
   x = 75,472.64