Finding the Fourth Proportional to 131,868.54, 181,991.61 and 75,288.42

Step by Step Solution

1. Step 1: Write the proportion equation
   131,868.54 : 181,991.61 = 75,288.42 : x
2. Step 2: Convert to fraction form
   131,868.54/181,991.61 = 75,288.42/x
3. Step 3: Cross multiply
   131,868.54x = 181,991.61 × 75,288.42
4. Step 4: Simplify right side
   131,868.54x = 13,701,860,770.16
5. Step 5: Solve for x
   x = 13,701,860,770.16/131,868.54
6. Step 6: Final answer
   x = 103,905.46