Finding the Fourth Proportional to 83,925.50, 115,596.57 and 64,507.28

Step by Step Solution

1. Step 1: Write the proportion equation
   83,925.50 : 115,596.57 = 64,507.28 : x
2. Step 2: Convert to fraction form
   83,925.50/115,596.57 = 64,507.28/x
3. Step 3: Cross multiply
   83,925.50x = 115,596.57 × 64,507.28
4. Step 4: Simplify right side
   83,925.50x = 7,456,819,650.70
5. Step 5: Solve for x
   x = 7,456,819,650.70/83,925.50
6. Step 6: Final answer
   x = 88,850.46