Finding the Fourth Proportional to 139,407.08, 192,374.60 and 75,744.72

Step by Step Solution

1. Step 1: Write the proportion equation
   139,407.08 : 192,374.60 = 75,744.72 : x
2. Step 2: Convert to fraction form
   139,407.08/192,374.60 = 75,744.72/x
3. Step 3: Cross multiply
   139,407.08x = 192,374.60 × 75,744.72
4. Step 4: Simplify right side
   139,407.08x = 14,571,359,833.39
5. Step 5: Solve for x
   x = 14,571,359,833.39/139,407.08
6. Step 6: Final answer
   x = 104,523.82