Finding the Fourth Proportional to 139,523.19, 209,280.09 and 60,637.42

Step by Step Solution

1. Step 1: Write the proportion equation
   139,523.19 : 209,280.09 = 60,637.42 : x
2. Step 2: Convert to fraction form
   139,523.19/209,280.09 = 60,637.42/x
3. Step 3: Cross multiply
   139,523.19x = 209,280.09 × 60,637.42
4. Step 4: Simplify right side
   139,523.19x = 12,690,204,411.78
5. Step 5: Solve for x
   x = 12,690,204,411.78/139,523.19
6. Step 6: Final answer
   x = 90,954.09