Finding the Fourth Proportional to 139,713.77, 209,570.72 and 46,219.52

Step by Step Solution

1. Step 1: Write the proportion equation
   139,713.77 : 209,570.72 = 46,219.52 : x
2. Step 2: Convert to fraction form
   139,713.77/209,570.72 = 46,219.52/x
3. Step 3: Cross multiply
   139,713.77x = 209,570.72 × 46,219.52
4. Step 4: Simplify right side
   139,713.77x = 9,686,258,084.45
5. Step 5: Solve for x
   x = 9,686,258,084.45/139,713.77
6. Step 6: Final answer
   x = 69,329.30