Finding the Fourth Proportional to 115,142.76, 158,899.32 and 64,152.72

Step by Step Solution

1. Step 1: Write the proportion equation
   115,142.76 : 158,899.32 = 64,152.72 : x
2. Step 2: Convert to fraction form
   115,142.76/158,899.32 = 64,152.72/x
3. Step 3: Cross multiply
   115,142.76x = 158,899.32 × 64,152.72
4. Step 4: Simplify right side
   115,142.76x = 10,193,823,584.15
5. Step 5: Solve for x
   x = 10,193,823,584.15/115,142.76
6. Step 6: Final answer
   x = 88,532.04