Finding the Fourth Proportional to 139,392, 209,180.16 and 65,525.76

Step by Step Solution

1. Step 1: Write the proportion equation
   139,392 : 209,180.16 = 65,525.76 : x
2. Step 2: Convert to fraction form
   139,392/209,180.16 = 65,525.76/x
3. Step 3: Cross multiply
   139,392x = 209,180.16 × 65,525.76
4. Step 4: Simplify right side
   139,392x = 13,706,688,960.92
5. Step 5: Solve for x
   x = 13,706,688,960.92/139,392
6. Step 6: Final answer
   x = 98,331.96