Finding the Fourth Proportional to 99,665.18, 149,558.82 and 39,722.41

Step by Step Solution

1. Step 1: Write the proportion equation
   99,665.18 : 149,558.82 = 39,722.41 : x
2. Step 2: Convert to fraction form
   99,665.18/149,558.82 = 39,722.41/x
3. Step 3: Cross multiply
   99,665.18x = 149,558.82 × 39,722.41
4. Step 4: Simplify right side
   99,665.18x = 5,940,836,805.15
5. Step 5: Solve for x
   x = 5,940,836,805.15/99,665.18
6. Step 6: Final answer
   x = 59,607.95