Finding the Fourth Proportional to 139,377.72, 192,340.20 and 75,715.98

Step by Step Solution

1. Step 1: Write the proportion equation
   139,377.72 : 192,340.20 = 75,715.98 : x
2. Step 2: Convert to fraction form
   139,377.72/192,340.20 = 75,715.98/x
3. Step 3: Cross multiply
   139,377.72x = 192,340.20 × 75,715.98
4. Step 4: Simplify right side
   139,377.72x = 14,563,226,736.40
5. Step 5: Solve for x
   x = 14,563,226,736.40/139,377.72
6. Step 6: Final answer
   x = 104,487.48