Finding the Fourth Proportional to 83,696.18, 115,545.76 and 64,533.94

Step by Step Solution

1. Step 1: Write the proportion equation
   83,696.18 : 115,545.76 = 64,533.94 : x
2. Step 2: Convert to fraction form
   83,696.18/115,545.76 = 64,533.94/x
3. Step 3: Cross multiply
   83,696.18x = 115,545.76 × 64,533.94
4. Step 4: Simplify right side
   83,696.18x = 7,456,622,692.90
5. Step 5: Solve for x
   x = 7,456,622,692.90/83,696.18
6. Step 6: Final answer
   x = 89,091.56