Finding the Fourth Proportional to 139,493.10, 192,498.21 and 75,832.50

Step by Step Solution

1. Step 1: Write the proportion equation
   139,493.10 : 192,498.21 = 75,832.50 : x
2. Step 2: Convert to fraction form
   139,493.10/192,498.21 = 75,832.50/x
3. Step 3: Cross multiply
   139,493.10x = 192,498.21 × 75,832.50
4. Step 4: Simplify right side
   139,493.10x = 14,597,620,509.83
5. Step 5: Solve for x
   x = 14,597,620,509.83/139,493.10
6. Step 6: Final answer
   x = 104,647.62