Finding the Fourth Proportional to 139,902.52, 193,059.86 and 76,238.96

Step by Step Solution

1. Step 1: Write the proportion equation
   139,902.52 : 193,059.86 = 76,238.96 : x
2. Step 2: Convert to fraction form
   139,902.52/193,059.86 = 76,238.96/x
3. Step 3: Cross multiply
   139,902.52x = 193,059.86 × 76,238.96
4. Step 4: Simplify right side
   139,902.52x = 14,718,682,944.15
5. Step 5: Solve for x
   x = 14,718,682,944.15/139,902.52
6. Step 6: Final answer
   x = 105,206.70