Finding the Fourth Proportional to 139,437, 209,118.11 and 60,532.47

Step by Step Solution

1. Step 1: Write the proportion equation
   139,437 : 209,118.11 = 60,532.47 : x
2. Step 2: Convert to fraction form
   139,437/209,118.11 = 60,532.47/x
3. Step 3: Cross multiply
   139,437x = 209,118.11 × 60,532.47
4. Step 4: Simplify right side
   139,437x = 12,658,435,417.37
5. Step 5: Solve for x
   x = 12,658,435,417.37/139,437
6. Step 6: Final answer
   x = 90,782.47