Finding the Fourth Proportional to 139,381.48, 209,486.94 and 65,561.32

Step by Step Solution

1. Step 1: Write the proportion equation
   139,381.48 : 209,486.94 = 65,561.32 : x
2. Step 2: Convert to fraction form
   139,381.48/209,486.94 = 65,561.32/x
3. Step 3: Cross multiply
   139,381.48x = 209,486.94 × 65,561.32
4. Step 4: Simplify right side
   139,381.48x = 13,734,240,309.16
5. Step 5: Solve for x
   x = 13,734,240,309.16/139,381.48
6. Step 6: Final answer
   x = 98,537.05