Finding the Fourth Proportional to 139,713.39, 209,570.16 and 46,219.14

Step by Step Solution

1. Step 1: Write the proportion equation
   139,713.39 : 209,570.16 = 46,219.14 : x
2. Step 2: Convert to fraction form
   139,713.39/209,570.16 = 46,219.14/x
3. Step 3: Cross multiply
   139,713.39x = 209,570.16 × 46,219.14
4. Step 4: Simplify right side
   139,713.39x = 9,686,152,333.77
5. Step 5: Solve for x
   x = 9,686,152,333.77/139,713.39
6. Step 6: Final answer
   x = 69,328.73