Finding the Fourth Proportional to 139,443.03, 209,127.18 and 60,538.50

Step by Step Solution

1. Step 1: Write the proportion equation
   139,443.03 : 209,127.18 = 60,538.50 : x
2. Step 2: Convert to fraction form
   139,443.03/209,127.18 = 60,538.50/x
3. Step 3: Cross multiply
   139,443.03x = 209,127.18 × 60,538.50
4. Step 4: Simplify right side
   139,443.03x = 12,660,246,013.45
5. Step 5: Solve for x
   x = 12,660,246,013.45/139,443.03
6. Step 6: Final answer
   x = 90,791.53