Finding the Fourth Proportional to 139,836.80, 209,686.52 and 59,863.46

Step by Step Solution

1. Step 1: Write the proportion equation
   139,836.80 : 209,686.52 = 59,863.46 : x
2. Step 2: Convert to fraction form
   139,836.80/209,686.52 = 59,863.46/x
3. Step 3: Cross multiply
   139,836.80x = 209,686.52 × 59,863.46
4. Step 4: Simplify right side
   139,836.80x = 12,552,560,602.56
5. Step 5: Solve for x
   x = 12,552,560,602.56/139,836.80
6. Step 6: Final answer
   x = 89,765.79