Finding the Fourth Proportional to 86,698.73, 130,022.17 and 45,123.05

Step by Step Solution

1. Step 1: Write the proportion equation
   86,698.73 : 130,022.17 = 45,123.05 : x
2. Step 2: Convert to fraction form
   86,698.73/130,022.17 = 45,123.05/x
3. Step 3: Cross multiply
   86,698.73x = 130,022.17 × 45,123.05
4. Step 4: Simplify right side
   86,698.73x = 5,866,996,115.10
5. Step 5: Solve for x
   x = 5,866,996,115.10/86,698.73
6. Step 6: Final answer
   x = 67,671.08