Finding the Fourth Proportional to 89,086.64, 133,320.54 and 55,338.80

Step by Step Solution

1. Step 1: Write the proportion equation
   89,086.64 : 133,320.54 = 55,338.80 : x
2. Step 2: Convert to fraction form
   89,086.64/133,320.54 = 55,338.80/x
3. Step 3: Cross multiply
   89,086.64x = 133,320.54 × 55,338.80
4. Step 4: Simplify right side
   89,086.64x = 7,377,798,698.95
5. Step 5: Solve for x
   x = 7,377,798,698.95/89,086.64
6. Step 6: Final answer
   x = 82,815.99