Finding the Fourth Proportional to 139,061.69, 191,903.40 and 75,399.33

Step by Step Solution

1. Step 1: Write the proportion equation
   139,061.69 : 191,903.40 = 75,399.33 : x
2. Step 2: Convert to fraction form
   139,061.69/191,903.40 = 75,399.33/x
3. Step 3: Cross multiply
   139,061.69x = 191,903.40 × 75,399.33
4. Step 4: Simplify right side
   139,061.69x = 14,469,387,784.72
5. Step 5: Solve for x
   x = 14,469,387,784.72/139,061.69
6. Step 6: Final answer
   x = 104,050.14