Finding the Fourth Proportional to 139,861, 209,824.71 and 46,366.75

Step by Step Solution

1. Step 1: Write the proportion equation
   139,861 : 209,824.71 = 46,366.75 : x
2. Step 2: Convert to fraction form
   139,861/209,824.71 = 46,366.75/x
3. Step 3: Cross multiply
   139,861x = 209,824.71 × 46,366.75
4. Step 4: Simplify right side
   139,861x = 9,728,889,872.39
5. Step 5: Solve for x
   x = 9,728,889,872.39/139,861
6. Step 6: Final answer
   x = 69,561.13