Finding the Fourth Proportional to 161,099.58, 241,630.68 and 42,780.18

Step by Step Solution

1. Step 1: Write the proportion equation
   161,099.58 : 241,630.68 = 42,780.18 : x
2. Step 2: Convert to fraction form
   161,099.58/241,630.68 = 42,780.18/x
3. Step 3: Cross multiply
   161,099.58x = 241,630.68 × 42,780.18
4. Step 4: Simplify right side
   161,099.58x = 10,337,003,983.92
5. Step 5: Solve for x
   x = 10,337,003,983.92/161,099.58
6. Step 6: Final answer
   x = 64,165.31