Finding the Fourth Proportional to 139,041.18, 208,577.88 and 50,336.46

Step by Step Solution

1. Step 1: Write the proportion equation
   139,041.18 : 208,577.88 = 50,336.46 : x
2. Step 2: Convert to fraction form
   139,041.18/208,577.88 = 50,336.46/x
3. Step 3: Cross multiply
   139,041.18x = 208,577.88 × 50,336.46
4. Step 4: Simplify right side
   139,041.18x = 10,499,072,113.50
5. Step 5: Solve for x
   x = 10,499,072,113.50/139,041.18
6. Step 6: Final answer
   x = 75,510.52