Finding the Fourth Proportional to 115,005.78, 158,713.92 and 64,018.62

Step by Step Solution

1. Step 1: Write the proportion equation
   115,005.78 : 158,713.92 = 64,018.62 : x
2. Step 2: Convert to fraction form
   115,005.78/158,713.92 = 64,018.62/x
3. Step 3: Cross multiply
   115,005.78x = 158,713.92 × 64,018.62
4. Step 4: Simplify right side
   115,005.78x = 10,160,646,133.19
5. Step 5: Solve for x
   x = 10,160,646,133.19/115,005.78
6. Step 6: Final answer
   x = 88,349.00