Finding the Fourth Proportional to 85,898.37, 128,859.71 and 26,740.02

Step by Step Solution

1. Step 1: Write the proportion equation
   85,898.37 : 128,859.71 = 26,740.02 : x
2. Step 2: Convert to fraction form
   85,898.37/128,859.71 = 26,740.02/x
3. Step 3: Cross multiply
   85,898.37x = 128,859.71 × 26,740.02
4. Step 4: Simplify right side
   85,898.37x = 3,445,711,222.59
5. Step 5: Solve for x
   x = 3,445,711,222.59/85,898.37
6. Step 6: Final answer
   x = 40,113.81