Finding the Fourth Proportional to 78,865.98, 108,836.69 and 43,057.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,865.98 : 108,836.69 = 43,057.50 : x
2. Step 2: Convert to fraction form
   78,865.98/108,836.69 = 43,057.50/x
3. Step 3: Cross multiply
   78,865.98x = 108,836.69 × 43,057.50
4. Step 4: Simplify right side
   78,865.98x = 4,686,235,779.68
5. Step 5: Solve for x
   x = 4,686,235,779.68/78,865.98
6. Step 6: Final answer
   x = 59,420.24