Finding the Fourth Proportional to 115,169.60, 158,931.12 and 64,182.56

Step by Step Solution

1. Step 1: Write the proportion equation
   115,169.60 : 158,931.12 = 64,182.56 : x
2. Step 2: Convert to fraction form
   115,169.60/158,931.12 = 64,182.56/x
3. Step 3: Cross multiply
   115,169.60x = 158,931.12 × 64,182.56
4. Step 4: Simplify right side
   115,169.60x = 10,200,606,145.27
5. Step 5: Solve for x
   x = 10,200,606,145.27/115,169.60
6. Step 6: Final answer
   x = 88,570.30