Finding the Fourth Proportional to 78,890.40, 108,870.48 and 43,081.92

Step by Step Solution

1. Step 1: Write the proportion equation
   78,890.40 : 108,870.48 = 43,081.92 : x
2. Step 2: Convert to fraction form
   78,890.40/108,870.48 = 43,081.92/x
3. Step 3: Cross multiply
   78,890.40x = 108,870.48 × 43,081.92
4. Step 4: Simplify right side
   78,890.40x = 4,690,349,309.72
5. Step 5: Solve for x
   x = 4,690,349,309.72/78,890.40
6. Step 6: Final answer
   x = 59,453.99