Finding the Fourth Proportional to 115,493.67, 159,370.90 and 64,499.33

Step by Step Solution

1. Step 1: Write the proportion equation
   115,493.67 : 159,370.90 = 64,499.33 : x
2. Step 2: Convert to fraction form
   115,493.67/159,370.90 = 64,499.33/x
3. Step 3: Cross multiply
   115,493.67x = 159,370.90 × 64,499.33
4. Step 4: Simplify right side
   115,493.67x = 10,279,316,271.50
5. Step 5: Solve for x
   x = 10,279,316,271.50/115,493.67
6. Step 6: Final answer
   x = 89,003.29