Finding the Fourth Proportional to 115,526.32, 159,410.59 and 64,532.57

Step by Step Solution

1. Step 1: Write the proportion equation
   115,526.32 : 159,410.59 = 64,532.57 : x
2. Step 2: Convert to fraction form
   115,526.32/159,410.59 = 64,532.57/x
3. Step 3: Cross multiply
   115,526.32x = 159,410.59 × 64,532.57
4. Step 4: Simplify right side
   115,526.32x = 10,287,174,099.53
5. Step 5: Solve for x
   x = 10,287,174,099.53/115,526.32
6. Step 6: Final answer
   x = 89,046.15