Finding the Fourth Proportional to 107,367.30, 160,856.55 and 91,815.30

Step by Step Solution

1. Step 1: Write the proportion equation
   107,367.30 : 160,856.55 = 91,815.30 : x
2. Step 2: Convert to fraction form
   107,367.30/160,856.55 = 91,815.30/x
3. Step 3: Cross multiply
   107,367.30x = 160,856.55 × 91,815.30
4. Step 4: Simplify right side
   107,367.30x = 14,769,092,395.22
5. Step 5: Solve for x
   x = 14,769,092,395.22/107,367.30
6. Step 6: Final answer
   x = 137,556.71