Finding the Fourth Proportional to 113,287.50, 156,316.33 and 64,229.30

Step by Step Solution

1. Step 1: Write the proportion equation
   113,287.50 : 156,316.33 = 64,229.30 : x
2. Step 2: Convert to fraction form
   113,287.50/156,316.33 = 64,229.30/x
3. Step 3: Cross multiply
   113,287.50x = 156,316.33 × 64,229.30
4. Step 4: Simplify right side
   113,287.50x = 10,040,087,512.31
5. Step 5: Solve for x
   x = 10,040,087,512.31/113,287.50
6. Step 6: Final answer
   x = 88,624.85