Finding the Fourth Proportional to 78,909.50, 108,895.12 and 45,375.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,909.50 : 108,895.12 = 45,375.50 : x
2. Step 2: Convert to fraction form
   78,909.50/108,895.12 = 45,375.50/x
3. Step 3: Cross multiply
   78,909.50x = 108,895.12 × 45,375.50
4. Step 4: Simplify right side
   78,909.50x = 4,941,170,517.56
5. Step 5: Solve for x
   x = 4,941,170,517.56/78,909.50
6. Step 6: Final answer
   x = 62,618.20