Finding the Fourth Proportional to 105,505.20, 158,147.37 and 75,906.99

Step by Step Solution

1. Step 1: Write the proportion equation
   105,505.20 : 158,147.37 = 75,906.99 : x
2. Step 2: Convert to fraction form
   105,505.20/158,147.37 = 75,906.99/x
3. Step 3: Cross multiply
   105,505.20x = 158,147.37 × 75,906.99
4. Step 4: Simplify right side
   105,505.20x = 12,004,490,833.12
5. Step 5: Solve for x
   x = 12,004,490,833.12/105,505.20
6. Step 6: Final answer
   x = 113,781.03