Finding the Fourth Proportional to 139,570.15, 209,270.94 and 62,619.10

Step by Step Solution

1. Step 1: Write the proportion equation
   139,570.15 : 209,270.94 = 62,619.10 : x
2. Step 2: Convert to fraction form
   139,570.15/209,270.94 = 62,619.10/x
3. Step 3: Cross multiply
   139,570.15x = 209,270.94 × 62,619.10
4. Step 4: Simplify right side
   139,570.15x = 13,104,357,918.95
5. Step 5: Solve for x
   x = 13,104,357,918.95/139,570.15
6. Step 6: Final answer
   x = 93,890.83