Finding the Fourth Proportional to 139,074.04, 208,518.89 and 50,315.99

Step by Step Solution

1. Step 1: Write the proportion equation
   139,074.04 : 208,518.89 = 50,315.99 : x
2. Step 2: Convert to fraction form
   139,074.04/208,518.89 = 50,315.99/x
3. Step 3: Cross multiply
   139,074.04x = 208,518.89 × 50,315.99
4. Step 4: Simplify right side
   139,074.04x = 10,491,834,653.77
5. Step 5: Solve for x
   x = 10,491,834,653.77/139,074.04
6. Step 6: Final answer
   x = 75,440.64