Finding the Fourth Proportional to 83,490.54, 115,228.76 and 51,669.69

Step by Step Solution

1. Step 1: Write the proportion equation
   83,490.54 : 115,228.76 = 51,669.69 : x
2. Step 2: Convert to fraction form
   83,490.54/115,228.76 = 51,669.69/x
3. Step 3: Cross multiply
   83,490.54x = 115,228.76 × 51,669.69
4. Step 4: Simplify right side
   83,490.54x = 5,953,834,049.94
5. Step 5: Solve for x
   x = 5,953,834,049.94/83,490.54
6. Step 6: Final answer
   x = 71,311.48