Finding the Fourth Proportional to 139,202.46, 192,181.89 and 91,538.01

Step by Step Solution

1. Step 1: Write the proportion equation
   139,202.46 : 192,181.89 = 91,538.01 : x
2. Step 2: Convert to fraction form
   139,202.46/192,181.89 = 91,538.01/x
3. Step 3: Cross multiply
   139,202.46x = 192,181.89 × 91,538.01
4. Step 4: Simplify right side
   139,202.46x = 17,591,947,768.64
5. Step 5: Solve for x
   x = 17,591,947,768.64/139,202.46
6. Step 6: Final answer
   x = 126,376.70