Finding the Fourth Proportional to 139,353.48, 192,176.82 and 107,471.88

Step by Step Solution

1. Step 1: Write the proportion equation
   139,353.48 : 192,176.82 = 107,471.88 : x
2. Step 2: Convert to fraction form
   139,353.48/192,176.82 = 107,471.88/x
3. Step 3: Cross multiply
   139,353.48x = 192,176.82 × 107,471.88
4. Step 4: Simplify right side
   139,353.48x = 20,653,604,137.82
5. Step 5: Solve for x
   x = 20,653,604,137.82/139,353.48
6. Step 6: Final answer
   x = 148,210.18