Finding the Fourth Proportional to 139,307.24, 209,043.82 and 50,567.64

Step by Step Solution

1. Step 1: Write the proportion equation
   139,307.24 : 209,043.82 = 50,567.64 : x
2. Step 2: Convert to fraction form
   139,307.24/209,043.82 = 50,567.64/x
3. Step 3: Cross multiply
   139,307.24x = 209,043.82 × 50,567.64
4. Step 4: Simplify right side
   139,307.24x = 10,570,852,633.98
5. Step 5: Solve for x
   x = 10,570,852,633.98/139,307.24
6. Step 6: Final answer
   x = 75,881.57