Finding the Fourth Proportional to 139,488.30, 192,493.65 and 75,826.56

Step by Step Solution

1. Step 1: Write the proportion equation
   139,488.30 : 192,493.65 = 75,826.56 : x
2. Step 2: Convert to fraction form
   139,488.30/192,493.65 = 75,826.56/x
3. Step 3: Cross multiply
   139,488.30x = 192,493.65 × 75,826.56
4. Step 4: Simplify right side
   139,488.30x = 14,596,131,301.34
5. Step 5: Solve for x
   x = 14,596,131,301.34/139,488.30
6. Step 6: Final answer
   x = 104,640.54