Finding the Fourth Proportional to 139,426.72, 209,102.72 and 60,522.19

Step by Step Solution

1. Step 1: Write the proportion equation
   139,426.72 : 209,102.72 = 60,522.19 : x
2. Step 2: Convert to fraction form
   139,426.72/209,102.72 = 60,522.19/x
3. Step 3: Cross multiply
   139,426.72x = 209,102.72 × 60,522.19
4. Step 4: Simplify right side
   139,426.72x = 12,655,353,723.99
5. Step 5: Solve for x
   x = 12,655,353,723.99/139,426.72
6. Step 6: Final answer
   x = 90,767.06