Finding the Fourth Proportional to 115,186.89, 158,955.51 and 64,199.42

Step by Step Solution

1. Step 1: Write the proportion equation
   115,186.89 : 158,955.51 = 64,199.42 : x
2. Step 2: Convert to fraction form
   115,186.89/158,955.51 = 64,199.42/x
3. Step 3: Cross multiply
   115,186.89x = 158,955.51 × 64,199.42
4. Step 4: Simplify right side
   115,186.89x = 10,204,851,589.86
5. Step 5: Solve for x
   x = 10,204,851,589.86/115,186.89
6. Step 6: Final answer
   x = 88,593.86