Finding the Fourth Proportional to 83,485.54, 115,221.86 and 51,664.69

Step by Step Solution

1. Step 1: Write the proportion equation
   83,485.54 : 115,221.86 = 51,664.69 : x
2. Step 2: Convert to fraction form
   83,485.54/115,221.86 = 51,664.69/x
3. Step 3: Cross multiply
   83,485.54x = 115,221.86 × 51,664.69
4. Step 4: Simplify right side
   83,485.54x = 5,952,901,678.12
5. Step 5: Solve for x
   x = 5,952,901,678.12/83,485.54
6. Step 6: Final answer
   x = 71,304.58