Finding the Fourth Proportional to 139,484.64, 209,178.48 and 59,519.37

Step by Step Solution

1. Step 1: Write the proportion equation
   139,484.64 : 209,178.48 = 59,519.37 : x
2. Step 2: Convert to fraction form
   139,484.64/209,178.48 = 59,519.37/x
3. Step 3: Cross multiply
   139,484.64x = 209,178.48 × 59,519.37
4. Step 4: Simplify right side
   139,484.64x = 12,450,171,347.16
5. Step 5: Solve for x
   x = 12,450,171,347.16/139,484.64
6. Step 6: Final answer
   x = 89,258.37