Finding the Fourth Proportional to 78,619.98, 108,483.36 and 45,079.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,619.98 : 108,483.36 = 45,079.50 : x
2. Step 2: Convert to fraction form
   78,619.98/108,483.36 = 45,079.50/x
3. Step 3: Cross multiply
   78,619.98x = 108,483.36 × 45,079.50
4. Step 4: Simplify right side
   78,619.98x = 4,890,375,627.12
5. Step 5: Solve for x
   x = 4,890,375,627.12/78,619.98
6. Step 6: Final answer
   x = 62,202.71