Finding the Fourth Proportional to 107,870.40, 161,776.80 and 32,990.40

Step by Step Solution

1. Step 1: Write the proportion equation
   107,870.40 : 161,776.80 = 32,990.40 : x
2. Step 2: Convert to fraction form
   107,870.40/161,776.80 = 32,990.40/x
3. Step 3: Cross multiply
   107,870.40x = 161,776.80 × 32,990.40
4. Step 4: Simplify right side
   107,870.40x = 5,337,081,342.72
5. Step 5: Solve for x
   x = 5,337,081,342.72/107,870.40
6. Step 6: Final answer
   x = 49,476.79