Finding the Fourth Proportional to 78,810.98, 108,775.33 and 48,189.31

Step by Step Solution

1. Step 1: Write the proportion equation
   78,810.98 : 108,775.33 = 48,189.31 : x
2. Step 2: Convert to fraction form
   78,810.98/108,775.33 = 48,189.31/x
3. Step 3: Cross multiply
   78,810.98x = 108,775.33 × 48,189.31
4. Step 4: Simplify right side
   78,810.98x = 5,241,807,705.31
5. Step 5: Solve for x
   x = 5,241,807,705.31/78,810.98
6. Step 6: Final answer
   x = 66,511.14