Finding the Fourth Proportional to 86,105.59, 129,158.64 and 26,134.54

Step by Step Solution

1. Step 1: Write the proportion equation
   86,105.59 : 129,158.64 = 26,134.54 : x
2. Step 2: Convert to fraction form
   86,105.59/129,158.64 = 26,134.54/x
3. Step 3: Cross multiply
   86,105.59x = 129,158.64 × 26,134.54
4. Step 4: Simplify right side
   86,105.59x = 3,375,501,320.53
5. Step 5: Solve for x
   x = 3,375,501,320.53/86,105.59
6. Step 6: Final answer
   x = 39,201.88