Finding the Fourth Proportional to 78,675.48, 108,559.98 and 45,135

Step by Step Solution

1. Step 1: Write the proportion equation
   78,675.48 : 108,559.98 = 45,135 : x
2. Step 2: Convert to fraction form
   78,675.48/108,559.98 = 45,135/x
3. Step 3: Cross multiply
   78,675.48x = 108,559.98 × 45,135
4. Step 4: Simplify right side
   78,675.48x = 4,899,854,697.30
5. Step 5: Solve for x
   x = 4,899,854,697.30/78,675.48
6. Step 6: Final answer
   x = 62,279.31