Finding the Fourth Proportional to 139,200.26, 192,096.86 and 75,538.05

Step by Step Solution

1. Step 1: Write the proportion equation
   139,200.26 : 192,096.86 = 75,538.05 : x
2. Step 2: Convert to fraction form
   139,200.26/192,096.86 = 75,538.05/x
3. Step 3: Cross multiply
   139,200.26x = 192,096.86 × 75,538.05
4. Step 4: Simplify right side
   139,200.26x = 14,510,621,837.83
5. Step 5: Solve for x
   x = 14,510,621,837.83/139,200.26
6. Step 6: Final answer
   x = 104,242.78