Finding the Fourth Proportional to 115,498.29, 159,385.96 and 64,511.75

Step by Step Solution

1. Step 1: Write the proportion equation
   115,498.29 : 159,385.96 = 64,511.75 : x
2. Step 2: Convert to fraction form
   115,498.29/159,385.96 = 64,511.75/x
3. Step 3: Cross multiply
   115,498.29x = 159,385.96 × 64,511.75
4. Step 4: Simplify right side
   115,498.29x = 10,282,266,408.10
5. Step 5: Solve for x
   x = 10,282,266,408.10/115,498.29
6. Step 6: Final answer
   x = 89,025.27