Finding the Fourth Proportional to 45,979.31, 68,566.61 and 45,558.92

Step by Step Solution

1. Step 1: Write the proportion equation
   45,979.31 : 68,566.61 = 45,558.92 : x
2. Step 2: Convert to fraction form
   45,979.31/68,566.61 = 45,558.92/x
3. Step 3: Cross multiply
   45,979.31x = 68,566.61 × 45,558.92
4. Step 4: Simplify right side
   45,979.31x = 3,123,820,129.03
5. Step 5: Solve for x
   x = 3,123,820,129.03/45,979.31
6. Step 6: Final answer
   x = 67,939.69