Finding the Fourth Proportional to 115,169.32, 158,931.50 and 64,180.93

Step by Step Solution

1. Step 1: Write the proportion equation
   115,169.32 : 158,931.50 = 64,180.93 : x
2. Step 2: Convert to fraction form
   115,169.32/158,931.50 = 64,180.93/x
3. Step 3: Cross multiply
   115,169.32x = 158,931.50 × 64,180.93
4. Step 4: Simplify right side
   115,169.32x = 10,200,371,476.30
5. Step 5: Solve for x
   x = 10,200,371,476.30/115,169.32
6. Step 6: Final answer
   x = 88,568.48