Finding the Fourth Proportional to 78,825.84, 108,779.58 and 50,531.46

Step by Step Solution

1. Step 1: Write the proportion equation
   78,825.84 : 108,779.58 = 50,531.46 : x
2. Step 2: Convert to fraction form
   78,825.84/108,779.58 = 50,531.46/x
3. Step 3: Cross multiply
   78,825.84x = 108,779.58 × 50,531.46
4. Step 4: Simplify right side
   78,825.84x = 5,496,790,995.59
5. Step 5: Solve for x
   x = 5,496,790,995.59/78,825.84
6. Step 6: Final answer
   x = 69,733.36